I was a little disappointed, but not at the product itself, but the fact that based on the photo I thought I was getting a whole trundle bed. What it actually is is just the bottom part to a trundle bed. The product itself is of standard quality and was easy to put together. For now, I just have it on the floor all by itself with a mattress because I thought I was getting an entire cheap bed. The product has small wheels on the bottom so it can be used underneath any twin bed as a trundle unit; however, Wayfair doesn't sell the bed that this product matches so I won't be able to get a matching bed to go with the trundle. It's pretty low to the floor and I'm not sure how happy I'd be using it just under a twin bed. Again, there are wheels on the bottom. It does not have rails that would actually slide underneath and back out of a bed. You just roll it under and roll it out. They provide dowels that are supposed to stop the trundle unit from being pulled out to far, but again, you can't buy the bed that comes with this trundle unit so the dowels are useless. The only way you can use them is by drilling the correct size holes in your current twin bed legs to accommodate the dowels. I suppose I would of been actually more disappointed if I couldn't use the piece at all, so I give it 3 stars because it 'can' be used under almost any twin bed, it just won't match and can be pulled out and placed anywhere in your room.