The "Not too Hot, Not too Cold™" bottoms that respond to your body temperature to keep you perfectly cool or warm and comfortable through the night.
Outlast® Technology was used by astronauts in the US Space Program and is a NASA Certified Space Technology!
Outlast® Technology is used in many other products with different names. Many of these products have been featured on television, radio, magazines, and other media; but in order to be sure that you are getting genuine Outlast® quality make sure that you look for the Outlast® name and symbol!