I got these sheets for my queen-size bed because I really like the prints and I have these on the trundle bed in my dog's room. They are like soft microfiber fabric, but for some reason I can't quite figure out why they don't stay in place, so they get all wrinkled. Perhaps, the fitted sheet elastic section was not made as tight as it should be. I am not completely certain, but I remember that someone else had mentioned the same concern in her review, but I still purchased them.