With an upgraded fit for enhanced performance, this active short sleeve tee perfectly combines a high-performing workout shirt with an everyday essential. Made from a new blend of brrrº fabric, it is proven to keep you cool and wick moisture away throughout the day.94% Nylon | 6% SpandexThis proprietary blend offers the best in cooling performance technology, and all-day comfort. The cooling effects of brrrº are independently lab tested and verified, and will help you feel dry and comfortable when life brings the heat.About brrrº Technology:brrrº combines the power of natural cooling minerals, active wicking and rapid drying technologies that work together to create a Triple Chill Effect™ that instantly and continuously draws heat and moisture away from the skin.