These are definitely soft, high-quality bamboo sheets. I've never owned bamboo sheets before, and keep in mind they are rayon, not like cotton. Long story short, these sheets make me hot and sweaty! They hold in heat and moisture like a nylon tent and I sweat profusely even in winter. Rayon does not allow for moisture to get out, nor does it soak it up and wick it away like cotton. Liquids literally sit on top of the sheet. My hubby does not have this problem, however, so I guess it depends on the person. I sweat easily if even the slightest bit overheated.