These DriTec sheets have changed the way my wife and I sleep forever! We bought a upper end memory foam bed that was supposed to sleep very cool, well long story short, it wasn't as cool as we wanted it to be. That's when we spoke to someone about DriTec sheets. We decided to buy a set and wow......we have never been more comfortable since! Forget about cotton sheets or anything from a department store, go into a BedGear retailer and pick these up now! Best sheets ever.