I'm a hot sleeper and I not in bed for more than fifteen minutes before I toss the sheets off.  I heard about low thread count bamboo sheets and and bought a set.  Let me tell you that It feels like heaven.  Silky smooth, light weight and they breathe.  I can sleep the whole night with the top sheet on.  What a great product   If you're a warm or hot sleeper you've go to give these a try.