This Large Bed Rest Headboard Wedge Reading Pillow can provide you with sturdy and comfy back support when you sit up in bed for reading or TV watching. The puffy polyester fiberfill and tufted fabric buttons keep the shape of the backrest pillow from collapsing and deforming. The twin-size wedge pillow fits across the dorm bed for back to school students, while the king size converts a daybed/twin bed to a couch. Other popular uses of the inclined body positioning pillow can be a bumper pillow for children, a bunk bed backrest, a headboard for RV/trailers, and a lounge back pillow on the floor for gamers, etc. More uses are waiting for your discovery! - Sizes for regular beds: twin 39", full 54", queen 59", California king 71", king 76" - Fabric 1: 100% polyester (with linen texture look for Anthracite, Blue, Blush, Coffee, Grey, Grey Lilac, Ivory, Sage Green, Yellow, Beige) - Fabric 2: 70% cotton + 30% linen (for Natural) - Fabric 3: 85% ramie + 15% cotton (for Ramie Camel) - Fabric 4: 100% cotton (for Medium Grey, Deep Brown, Dark Grey, Silver, Light Beige)