Bear Skn's new bamboo underwear designs are blended with Elastane and developed specifically for Bear Skn's underwear. The material has the ability to absorb three times its weight in water, making every time you wear them a sweat-free experience. The fabric is also extremely lightweight. Fibers taken from the bamboo plant are thinner than human hair. They are also round and smooth, giving their resulting material a “smooth as silk” touch.