Adidas Techfit Power Short Sleeve T-Shirt Ventilated CLIMACOOL - Keeps you dry and comfortable when you are moving fast. TECHFIT - Focuses your muscles' energy to generate maximum explosive power, acceleration and long-term endurance. PowerWEB - Actively supports muscles, boosting power output and energy efficiency. Combination of Silhouettes and Mesh Inserts - Allows for maximum range of motion, breathability and comfort. Seaming - Flatlock seams reduce chafing and skin irritation.