The Philadelphia Eagles Guide Long Sleeve Tee is designed with an upgraded fit for elevated performance. This active essential is the perfect combination of a high performing workout tee and an everyday essential. Made from a new blend of brrrº fabric that is proven to keep you cool and wick moisture away throughout the day. Finished with the wolf on the back yoke. This officially licensed product is part of our NFL Throwback Collection, which features exclusive vintage logos.94% Nylon | 6% Spandex This 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.