Made of 100% TENCEL® Lyocell, ARCTIC AIRE•MAX is softer than silk and was intelligently designed with SHEEX® CoolX™ Technology performance properties that wick away moisture and keep your body cool while you sleep. TENCEL® Lyocell fibers are extremely smooth and contain submicroscopic channels that help to regulate absorption and release moisture for a more comfortable and cooler night’s sleep. TENCEL® is engineered with the ability to naturally reduce the growth of bacteria without any chemical additives. The super-fast moisture transport system and carefully engineered fibers allow you to stay fresh, clean and healthy while you sleep.