Queen Semi Waveless Water Beds

The InnoMax Genesis 500 Reduced Motion Waterbed Mattress reduces motion to provide custom-tailored hydrodynamic sleep™, resulting in the virtually perfect ear-to-ankle body alignment as defined by physicians and chiropractors for the ideal sleeping posture. This deep-fill InnoMax waterbed mattress, for use with a minimum rigid box or wood waterbed frames, performs best when filled properly, and the fill level is below the top of the safety liner. The G500 waterbed mattress, which provides true InnoMax SG1™ full-depth flotation and reduced motion performance also includes a mid-body wave reduction system balanced more to free flow than waveless performance. Other features include 20 Mil premium vinyl, Contouring body profile low tension sleep Surface, 1" Double reinforced corners, 4-Way tethered support system, and T-Corner lap seam construction. The SG1™ (Specific Gravity 1) Low tension mattress (LTM) surface features responsive levels of support for your body's varied levels of need; for the head, mid-body spinal, and leg areas. For near-perfect body alignment, the responsive give of the generously over-cut SG1™ surface cradles your body while the interior elements provide complementary support. Additionally, the SG1™ LTM surface eliminates the disruption of the other sleeper when one gets out of bed and with varying weights of sleep partners. NASA astronaut training is often done underwater as it simulates the effects of being weightless because the human body, comprised of 90% water, is in balance with the fluid environment. Just as babies are suspended in a gravity-neutral fluid environment until born, InnoMax SG1 hydrodynamic sleep™ mattresses truly offer flotation support as nature prescribes. The body can only be truly relaxed when muscles do not have to constantly fight the forces of gravity. SG1™ fluid suspension evenly supports your body in gravity-neutral sleep and offers a hygienic environment as they are easily cleaned with an approved waterbed vinyl conditioner.

The bed is so wonderful so glaf I bought it!! Sleeping like a baby!!!. William. NE. Mon Sep 17 2018

InnoMax Genesis 400 Gentle Wave Waterbed Mattress reduces motion to provide custom-tailored hydrodynamic sleep™ resulting in the virtually perfect ear-to-ankle body alignment as defined by physicians and chiropractors for the ideal sleeping posture. This deep-fill InnoMax waterbed mattress, for use with minimum rigid box or wood waterbed frames, performs best when filled properly and the fill level is below the top of the safety liner. The Genesis 400 Gentle Wave Waterbed Mattress, which provides true InnoMax SG1™ full depth flotation and gentle wave performance also includes a mid-body wave reduction system balanced to more free flow than waveless performance. Other features include 20 Mil premium vinyl, contouring body profile low tension sleep surface, 1" double reinforced corners, 4-Way tethered support system, and T-Corner lap seam construction. The SG1™ (Specific Gravity 1) Low tension mattress (LTM) surface features responsive levels of support for your body's varied levels of need; for the head, mid-body spinal, and leg areas. For near-perfect body alignment, the responsive give of the generously over-cut SG1™ surface cradles your body while the interior elements provide complementary support. Additionally, the SG1™ LTM surface eliminates the disruption of the other sleeper when one gets out of bed and with varying weights of sleep partners. NASA astronaut training is often done underwater as it simulates the effects of being weightless because the human body, comprised of 90% water, is in balance with the fluid environment. Just as babies are suspended in a gravity-neutral fluid environment until born, InnoMax SG1 Hydrodynamic Sleep™ mattresses truly offer flotation support as nature prescribes. The body can only be truly relaxed when muscles do not have to constantly fight the forces of gravity. SG1™ fluid suspension evenly supports your body in gravity-neutral sleep and offers a hygienic environment as they are easily cleaned with an approved waterbed vinyl conditioner.

Wayfairs price was under all others I looked at. Good quality also. Delivery was actually earlier than scheduled.. Donna. Tucson, AZ. Sun Dec 07 2025

Elevate your sleep with our 60% Semi-Waveless Waterbed Mattress Bundle, crafted for a serene sleeping experience. This bundle is thoughtfully assembled with a dual-layer fibre bladder that minimizes motion while providing substantial support. Our solid-state 300-watt heater maintains your ideal sleep temperature efficiently, complimented by a robust stand-up liner for a leak-proof foundation. The included fill and drain kit offers a straightforward setup and maintenance process, while our waterbed conditioner ensures the longevity of your mattress. Designed for those seeking tranquillity and durability in their sleep setup, this bundle does not include a frame, allowing you to integrate seamlessly with your existing decor. Note: Frame not included.

It's very well made and easy to get used to. Andy. Mon Sep 16 2019

The InnoMax Genesis 600 Balanced Motion Waterbed Mattress reduces motion to provide custom-tailored hydrodynamic sleep™, resulting in the virtually perfect ear to ankle body alignment as defined by physicians and chiropractors for the ideal sleeping posture. This deep-fill InnoMax waterbed mattress, for use with minimum rigid box or wood waterbed frames, performs best when the fill level is below the top of the safety liner. The G600 Waterbed mattress, which provides full depth flotation and balanced motion performance, also includes a mid-body wave reduction system balanced between free flow and waveless performance. Other features include 22 mil premium vinyl, contouring body profile low tension sleep surface, 2" double reinforced corners, 4-Way tethered support system, recessed L-Seam construction, and a thermally Efficient black bottom. For the near-perfect body alignment, the responsive give of the generously over-cut SG1™ surface cradles your body while the interior elements provide complementary support. Additionally, the SG1™ LTM surface eliminates the disruption of the other sleeper when one gets out of bed and with varying weights of sleep partners. The body can only be truly relaxed when muscles do not have to constantly fight the forces of gravity. SG1™ fluid suspension evenly supports your body in gravity-neutral sleep and offers a hygienic environment as they are easily cleaned with an approved waterbed vinyl conditioner.

The waterbed mattress was very good quality and exactly what I wanted. I was very pleased with my purchase.. Donna. Vienna, WV. Sat Feb 22 2025

This waterbed mattress substantially reduces motion to provide custom-tailored hydrodynamic sleep™, resulting in the virtually perfect ear to ankle body alignment as defined by physicians and chiropractors for the ideal sleeping posture. This deep-fill InnoMax waterbed mattress, for use with a minimum rigid box or wood waterbed frames, performs best when the fill level is below the top of the safety liner. The G700 waterbed mattress, which provides true InnoMax SG1™ full depth flotation and semi waveless performance, is additionally enhanced with mid-body support. Other features include 22 mil premium vinyl, contouring body profile low tension, sleep surface, 2" double reinforced corners, 4-Way tethered support system, recessed L-Seam construction, and a thermally efficient black bottom. The SG1™ (Specific Gravity 1) Low tension mattress (LTM) surface features responsive levels of support for your body's varied levels of need; for the head, mid-body spinal, and leg areas. For the near-perfect body alignment, the responsive give of the generously over-cut SG1™ surface cradles your body while the interior elements provide complementary support. Additionally, the SG1™ LTM surface eliminates the disruption of the other sleeper when one gets out of bed and with varying weights of sleep partners. NASA astronaut, training is often done underwater as it simulates the effects of being weightless because the human body, comprised of 90% water, is in balance with the fluid environment. Just as babies are suspended in a gravity-neutral fluid environment until born, InnoMax SG1 hydrodynamic sleep™ mattresses truly offer flotation support as nature prescribes. The body can only be truly relaxed when muscles do not have to constantly fight the forces of gravity. SG1™ fluid suspension evenly supports your body in gravity-neutral sleep and offers a hygienic environment as they are easily cleaned with an approved waterbed vinyl conditioner.

Great! We were looking for an outdoor mattress and this fit the bill. We added it to our outdoor cabana!. Tom. Orange Park, FL. Wed Aug 10 2022

Discover unparalleled comfort with our 30% Semi-Waveless Waterbed Bundle, thoughtfully curated to enhance your sleeping experience. Each element, from the semi-waveless bladder to the efficient 300-watt heater, is designed with your utmost comfort in mind. Our inclusive kit comes with a robust stand-up liner, simplifying your set-up process, while the included waterbed conditioner ensures your bed remains pristine with minimal effort. Experience the tranquillity of gentle water motions, encouraging deeper, more restful sleep without the hassle of frequent maintenance. This bundle does not include the frame, granting you the freedom to integrate the system with your existing bed setup seamlessly. Upgrade to a sleep sanctuary with our comprehensive waterbed bundle, where luxury meets functionality.

I opted for the "super single" size which is the smallest, but it's actually surprisingly roomy, It's super comfortable too!. Lois. Mon Sep 16 2019

This soft-side waterbed set is part of our winner's collection. Each model in the Strobel winners collection is named after a Kentucky derby-winning horse and features fabric-covered inner support rails made from soy-based foam, a soft-side heater (for deep fill and extra deep fill models only), and a premium strobel soft-side waterbed mattress. Strobel’s winner's collection is broken into 3 model categories: shallow fill (4” fill depth using tube system), deep fill (6” fill depth), and extra deep fill (8.5” fill depth). When you choose a Strobel soft side waterbed you too will be a winner! This “day star” soft-side waterbed mattress top the only set is a deep fill model. Strobel’s hydro-support 1200 mattress (included with this set) is semi-waveless with 2 layers of internal, full-body support fibre for partial wave reduction. The mattress comes with Strobel’s patented leak-proof double wall technology guaranteeing your mattress from messy water leaks and offering you peace of mind. The hydro-support 1200 waterbed mattress is uniquely designed with a deep moulded surface for pressure reduction and conforming comfort, added lumbar support, and 4-way tethered corners to prevent internal shifting. Strobel waterbeds do not require toxic flame retardant chemicals like other mattresses to comply with federal fire safety regulations.

The mattress was excellent. Cheryl. Ferguson, MO. Fri Dec 08 2023

This HS301 Premium Hard-Side Waterbed Mattress is part of our Hydro-Support 300 Series featuring a deep moulded feathertop pressure reduction surface for greatest conforming comfort, heater compatible bottom, bottom seams for greater durability, reinforced corners, 25 mil vinyl (25% thicker than most). The deep moulded feathertop surface provides reduced surface tension and no pressure points for the greatest comfort and best sleep. The HS301 is a Semi-Waveless waterbed mattress with 1 layer of internal full-body support fibre for a slight wave reduction compared to our HS300 (Free Flow) model.

We love the mattress it is just as described and just what we needed.. Victoria. Mon Sep 14 2026

This soft-side waterbed top-only set is part of Strobel's Winners collection. Each model in our Winners collection is named after a Kentucky Derby-winning horse and comes with inner support rails made from soy-based, fabric-covered foam, a premium Strobel waterbed mattress, a soft-side heater (for deep fill and extra deep fill models only), fill & drain kit, and a 4 oz bottle of waterbed conditioner. Please note, all soft-side waterbed sets come in the option of “top only” or “complete set”. A top-only purchase will include the inner support rails, bladder, fill & drain kit, waterbed conditioner, and heater only. A complete set purchase will include everything in the top-only option as well as a 9-leg metal bed frame and a heavy-duty foundation. Strobel’s “American pharaoh” waterbed includes our “hydro-support 1200” waterbed mattress which features a deep moulded surface for pressure reduction and greatest conforming comfort, 2 layers of internal full-body support fibre, added lumbar support, 4-way tethered corners to prevent internal shifting, and Strobel's patented double-wall, leak-proof technology. Strobel waterbeds do not require toxic flame retardant chemicals like other mattresses to comply with federal fire safety regulations. When you choose a Strobel soft-side waterbed you too will be a winner!

The bed is great. Exactly what I wanted. The order was delivered in two part about 3 days apart with the bedrails coming after the bed itself. There was no indication on the box that the first box was not the total order so we spent quite a bit of time trying to set it up without the necessary side rails. It was just a breakdown in communication that was easily solved.. Lesley. Young Harris, GA. Wed Aug 06 2025

The waterbed features a significantly lighter weight with dual adjustable cylinder support. Featuring an incredibly resilient high-density pillowtop with 5-zone body matrix support this mattress offers the best of all worlds comfort. By filling cylinders to different water levels you can create the feel you desire and each side of the mattress can be customized for dual comfort levels in one mattress. Enhanced with the latest in sleep technology the high-density performance comfort layer helps maintain a comfortable sleeping environment while the pillow top upper panel components include specially formulated contouring fibre-flex support and moisture barrier protection all while fitting standard-size sheets and bedding. fluid suspension support benefits are well documented in medical and sleep research. Minimizing pressure points on the human body which consists of 90% water, you float in a near-weightless environment helping to reduce muscle tension and tossing and turning. And the cylinder design minimizes side-to-side motion while individual tubes offer free-flow contouring support.

Love this bed! Highly recommend, easy to put together, easy to maintain and extremely comfortable for sleeping.. Debbie. Barrington, NJ. Sun Dec 05 2021

This 9" Semi-Waveless Deep Fill Hard-Side Waterbed Mattress is part of our Hydro-Support 300 Series featuring a deep moulded feathertop pressure reduction surface for greatest conforming comfort, heater compatible bottom, bottom seams for greater durability, reinforced corners, 25 mil vinyl (25% thicker than most). The deep moulded feathertop surface provides reduced surface tension and no pressure points for the greatest comfort and best sleep. The HS305 is a Semi-Waveless waterbed mattress with 5 layers of internal full-body support fibre for wave reduction.

Love it. Back pains are gone and I sleep great. Steph. Sat Sep 12 2026

The product features significantly lighter weight with portable and adjustable cylinder support. Portability enables you to move your waterbed and adjust the flotation sleep cylinders to your personal comfort preference for a great night's sleep. By filling each cylinder with different levels of water you can create the feel you desire and each side of the mattress can be customized for dual comfort levels in one mattress. Featuring the latest in sleep technology the phase change temperature controlling top fabric helps maintain a comfortable sleeping environment while the plush-top upper panel components include specially formulated contouring comfort layers and moisture barrier protection all while fitting standard size sheets & bedding. The benefits of fluid suspension support are well documented in medical and sleep research. Minimizing pressure points on the human body which consists of 90% water, your body floats in a near-weightless environment helping to reduce muscle tension and tossing & turning. And the waveless cylinder support system virtually eliminates motion for the deepest most rejuvenating sleep. Complete with accessories this lighter weight easy to move modular system includes everything you need to fill, drain and maintain your waterbed (foundation not included).

The memory-gel pillow top semi-waveless mid fill soft-side waterbed mattress offers similar contouring feel to original all water chambers with moderate wave suppression. Featuring a memory-gel top layer and progressive support 5-zone body matrix ortho layer this mattress offers the best of all worlds comfort. And with precise temperature control your sleep environment will keep you warm in the winter and cool in the summer. In addition the pillow top upper panel is designed to complement the fluid feel by including specially formulated contouring comfort layers with moisture barrier protection and all while fitting standard size bed frames, sheets, and bedding. As the human body consists of 90 percent water, your body is buoyed up by a force equal to the weight of the water displaced which explains how flotation support minimizes pressure points. As your body floats in a near-weightless environment helping to reduce muscle tension, the tethered semi-waveless fluid core provides interactive support and solid-state temperature control enables you to regulate your mattress environment for the deepest most rejuvenating sleep. Complete with foundation and legs, this system includes a universal drain hero kit providing everything you need to fill, drain, and maintain your waterbed.

I think the Quality is great but should have ordered waveless .. Cheryl. Santa Maria, CA. Sun Mar 21 2021

This HS504 Premium Hard-Side Waterbed Mattress is part of our Hydro-Support 500 Series featuring Strobel's Patented Double-Wall Leak Proof System for added peace of mind, deep moulded feathertop pressure reduction surface for greatest conforming comfort, heater compatible bottom, bottom seams for greater durability, reinforced corners, 25 mil vinyl (25% thicker than most). The deep moulded feathertop surface provides reduced surface tension and no pressure points for greatest comfort and best sleep. The HS504 is a Semi-Wavelss waterbed mattress 4 layers of internal full body support fibre for wave reduction Strobel Waterbeds do not require toxic flame retardant chemicals like other mattresses to comply with federal fire safety regulations.

First nite great sleep, wave-less as stated. All is well. Robert. FL. Tue Aug 13 2024

The revolutionary memory-gel pillow top semi-waveless shallow-fill soft side tube waterbed features significantly lighter weight with portable and adjustable cylinder support. Featuring a memory-gel top layer and progressive support with a 5-zone body matrix ortho layer this mattress offers the best of all worlds comfort. By filling cylinders to different water levels you can create the feel you desire and each side of the mattress can be customized for dual comfort levels in one mattress. Featuring the latest in sleep technology the memory-gel temperature regulating the comfort layer helps maintain a comfortable sleeping environment while the plush-top upper panel components include specially formulated contouring support and moisture barrier protection all while fitting standard-size sheets and bedding. The benefits of fluid suspension support are well documented in medical and sleep research. Minimizing pressure points on the human body which consists of 90 percent water, your body floats in a near-weightless environment helping to reduce muscle tension and tossing and turning. Complete with accessories this easy-to-move modular system includes everything you need to fill, drain, and maintain your waterbed.

Very comfortable!. Stephanie. Thu Jan 25 2024

The plush-top reduced motion midfill soft-side waterbed mattress offers a similar contouring feel to the original all-water chambers with a low degree of wave suppression. Featuring a fluid support module with minimal wave reduction, you will experience the comfort of all water support while retaining active motion. And with precise temperature control, your sleep environment will keep you warm in the winter and cool in the summer. In addition, the plush top panel is designed to complement the feel by including specially formulated contouring comfort layers with moisture barrier protection and all while fitting standard-size bedframes, sheets & bedding. As the human body consists of 90% water, your body is buoyed up by a force equal to the weight of the water displaced which explains how flotation support minimizes pressure points. As your body floats in a near-weightless environment helping to reduce muscle tension, the reduced motion system provides interactive support and the solid-state temperature control enables you to regulate your mattress environment for the deepest most rejuvenating sleep. Complete with foundation and legs, this system includes a universal drain hero kit providing everything you need to fill, drain and maintain your waterbed.

Anonymous. Mon Apr 22 2024

This HS303 Premium Hard-Side Waterbed Mattress is part of our Hydro-Support 300 Series featuring a deep moulded feathertop pressure reduction surface for the greatest conforming comfort, heater-compatible bottom, bottom seams for greater durability, reinforced corners, 25 mil vinyl (25% thicker than most). The deeply moulded feathertop surface provides reduced surface tension and no pressure points for the greatest comfort and best sleep. The HS303 is a Semi-Waveless waterbed mattress with 3 layers of internal full-body support fibre for significant wave reduction.

Love my waterbed mattress, just as advertised. Thomas. Huntsville, AL. Mon Oct 27 2025

The revolutionary memory-gel pillow top semi-waveless shallow-fill soft side tube waterbed features significantly lighter weight with portable and adjustable cylinder support. Featuring a memory-gel top layer and progressive support with a 5-zone body matrix ortho layer this mattress offers the best of all worlds comfort. By filling cylinders to different water levels you can create the feel you desire and each side of the mattress can be customized for dual comfort levels in one mattress. Featuring the latest in sleep technology the memory-gel temperature regulating the comfort layer helps maintain a comfortable sleeping environment while the plush-top upper panel components include specially formulated contouring support and moisture barrier protection all while fitting standard size sheets and bedding. The benefits of fluid suspension support are well documented in medical and sleep research. Minimizing pressure points on the human body which consists of 90 percent water, your body floats in a near-weightless environment helping to reduce muscle tension and tossing and turning. Complete with foundation, legs, and accessories this easy to move modular system includes everything you need to fill and maintain your waterbed.

This Soft-Side Waterbed Complete Set is part of Strobel’s Winners Collection. Each model in our Winners Collection is named after a Kentucky Derby Winning Horse and comes with inner support rails made from soy-based, fabric-covered foam, a premium Strobel waterbed mattress, a soft-side heater (for deep fill and extra deep fill models only), fill & drain kit, and a 4 oz bottle of waterbed conditioner. Please note, all Soft-Side Waterbed Sets come in the option of “Top Only” or “Complete Set”. A Top Only purchase will include the inner support rails, bladder, fill & drain kit, waterbed conditioner, heater, and liner only. A Complete Set purchase will include everything in the Top Only option as well as a metal bed frame and heavy-duty foundation. Strobel’s “American Pharaoh” Waterbed includes our “Hydro-Support 1200” Waterbed Mattress which features a deep moulded surface for pressure reduction and greatest conforming comfort, 2 layers of internal full-body support fibre, added lumbar support, 4-way tethered corners to prevent internal shifting, and Strobel’s patented double-wall, leak-proof technology. Strobel Waterbeds do not require toxic flame retardant chemicals like other mattresses to comply with federal fire safety regulations. When you choose a Strobel Soft-Side Waterbed you too will be a Winner!

This Soft-Side Waterbed Set is part of our Winner's Collection. Each model in the Strobel Winners Collection is named after a Kentucky Derby Winning Horse and features fabric-covered inner support rails made from soy-based foam, a heavy-duty foundation, a metal frame, a soft-side heater (for deep fill and extra deep fill models only), and a premium Strobel soft-side waterbed mattress. Strobel’s Winners Collection is broken into 3 model categories: Shallow Fill (4” fill depth using tube system), Deep Fill (6” fill depth), and Extra Deep Fill (8.5” fill depth). When you choose a Strobel Soft-Side Waterbed you too will be a Winner! This “Day Star” Soft-Side Waterbed Mattress Set is a Deep Fill model. Strobel’s Hydro-Support 1200 Mattress (included with this set) is semi-waveless with 2 layers of internal, full-body support fibre for partial wave reduction. The mattress comes with Strobel’s Patented Leak-Proof Double Wall Technology guaranteeing your mattress from messy water leaks and offering you peace of mind. The Hydro Support 1200 Waterbed Mattress is uniquely designed with a deep moulded surface for pressure reduction and conforming comfort, added lumbar support, and 4-way tethered corners to prevent internal shifting. Strobel Waterbeds do not require toxic flame retardant chemicals like other mattresses to comply with federal fire safety regulations.

This HS506 Premium Hard-Side Waterbed Mattress is part of our Hydro-Support 500 Series featuring Strobel's Patented Double-Wall Leak Proof System for added peace of mind, deep moulded feathertop pressure reduction surface for greatest conforming comfort, heater compatible bottom, bottom seams for greater durability, reinforced corners, 25 mil vinyl (25% thicker than most). The deep moulded feathertop surface provides reduced surface tension and no pressure points for greatest comfort and best sleep. The HS506 is a Semi-Wavelss waterbed mattress 6 layers of internal full body support fibre for wave reduction Strobel Waterbeds do not require toxic flame retardant chemicals like other mattresses to comply with federal fire safety regulations.

This HS505 Premium Hard-Side Waterbed Mattress is part of our Hydro-Support 500 Series featuring Strobel's Patented Double-Wall Leak Proof System for added peace of mind, deep moulded feathertop pressure reduction surface for greatest conforming comfort, heater compatible bottom, bottom seams for greater durability, reinforced corners, 25 mil vinyl (25% thicker than most). The deep moulded feathertop surface provides reduced surface tension and no pressure points for the greatest comfort and best sleep. The HS505 is a Semi-Waveless waterbed mattress 5 layers of internal full-body support fibre for wave reduction Strobel Waterbeds do not require toxic flame retardant chemicals like other mattresses to comply with federal fire safety regulations.

The waterbed features significantly lighter weight with dual adjustable cylinder support. Featuring an incredibly resilient high-density pillowtop with 5-zone body matrix support this mattress offers the best of all worlds comfort. By filling cylinders to different water levels you can create the feel you desire and each side of the mattress can be customized for dual comfort levels in one mattress. Enhanced with the latest in sleep technology the high-density performance comfort layer helps maintain a comfortable sleeping environment while the pillow top upper panel components include specially formulated contouring fibre-flex support and moisture barrier protection all while fitting standard size sheets and bedding. fluid suspension support benefits are well documented in medical and sleep research. Minimizing pressure points on the human body which consists of 90% water, you float in a near-weightless environment helping to reduce muscle tension and tossing and turning. And the cylinder design minimizes side to side motion while individual tubes offer free flow contouring support.

A semi waveless waterbed mattress contains one to two layers of wave reducing fibre. The fibre provides approximately 60% motion reduction for those that want less motion than a free flow waterbed but do not want to choose waveless support. A semi waveless waterbed allows for 8-10 seconds of movement. Add more or less water to control the firmness level so you can enjoy nearly perfect body alignment and better sleep night after night. Since your body consists of over 90% water why not also sleep in a pressure free and nearly weightless environment that virtually eliminates muscle tension. Add a hard-side waterbed heater to precisely regulate the water temperature and enjoy the deepest most rejuvenating sleep you have ever dreamed of. For use in a traditional hard-side wooden box frame.

in love with this water mattress!! SO comfortable. The staff were friendly and it was delivered a day early!. Diego. Mon Sep 16 2019

A semi waveless waterbed mattress contains one to two layers of wave reducing fibre. The fibre provides approximately 60% motion reduction for those that want less motion than a free flow waterbed but do not want to choose waveless support. A semi waveless waterbed allows for 8-10 seconds of movement. Add more or less water to control the firmness level so you can enjoy nearly perfect body alignment and better sleep night after night. Since your body consists of over 90% water why not also sleep in a pressure free and nearly weightless environment that virtually eliminates muscle tension. Add a hard-side waterbed heater to precisely regulate the water temperature and enjoy the deepest most rejuvenating sleep you have ever dreamed of. For use in a traditional hard-side wooden box frame.