Just to clarify, these are 100% Rayon (made from bamboo). The fabric itself feels great at first. It is silky and soft but once you actually try to sleep in these sheets, you quickly realize how hot they are. Some reviews say they are breathable and do not wrinkle but my experience was very different. I found these sheets extremely hot and my boyfriend and I both ended up kicking them off in the night. They also wrinkle like crazy! I have attached a photo of the sheet after one night of use so you can see how easily they wrinkle.