I was so excited to try these sheets because a) I've heard bamboo sheets are great for those of us dealing with night sweats, and b) I assumed the sheets would fit the mattress perfectly because they are both Tempur-Pedic...I was wrong on both accounts. The sheets were very loose, and although they were very soft, I woke up very hot and sweaty. I can't return them (and they weren't cheap) so now they are sitting in my hall closet until I can find someone else who wants them.