Given the price, I didn't expect the quality to be great, but the biggest problem is that it's too big for our twin mattress.  We have a nice, normal, good quality mattress, and this product is too wide for the mattress creating a large, roughly 4-finger width space in the back with the mattress pushed all the way forward.  I had to put very large, full pillows in the back.  Do not recommend this product.