adidas Techfit Powerweb GFX Arm Sleeve - Men's ClimaCool™ moisture management keeps you cool and dry in the TECHFIT PowerWEB Arm Sleeve. PowerWeb increases blood flow to reduce muscle fatigue. TECHFIT focuses your muscles' energy to generate maximum explosive power, acceleration and long-term endurance. Ventilation in heat zones for breathability. Sold separately. 75% polyamide/25% spandex. Imported.