RC Tankoo Men's Cycling Short Sleeve Running Sport Quick Dry Training Sportswear Material:87% Polyester/13% Spandex. 3D Cutting/Ergonomic/Personal Comfort. Sweat Breathable Quick-Drying/UV Protection. Elastic fabric hugs the body to reduce drag and maximize performance. Elastic joint body curve,further reducing the wind resistance. Suit for cycling,running,any outdoor activities.