adidas Techfit Powerweb Mens Short Sleeve Baselayer Shirt - Yellow Provides strong support for the body, reduces muscle vibration and improves the bodies posture Strategically placed PowerWeb bands link key body areas together and work with the body to store energy through movement and amplify explosive movement Climalite technology helps to keep you dry by drawing sweat away from the body Formotion technology designed to move with the body for freedom of movement 75% Nylon 25% Elastane