We've created an advanced sleep system for better rest & recovery The pattern inside the fabric returns infrared energy to your body, boosting localized blood flow & increasing the amount of oxygen reaching your muscles to restore your muscles faster Heavyweight, insanely soft, premium modal fabric for superior comfort & added warmth 4-way stretch construction moves better in every direction Material wicks sweat & dries really fast Ribbed cuffs & collar Shaped hem Powered by Celliant