I was worried with the fabric type it would get hot, but it doesn’t! It is super soft but keeps it’s shape and is VERY comfortable. I have had this set for a few weeks now and it has easily kept its shape. There is a strap on the back of the top piece that keeps it pretty much in place. The grips on the bottom piece do an "ok" job of staying in place. The only con for me personally, it makes it pretty difficult to sit with your legs crossed (which might be better for my posture in the long run…) ..More