HIGHLY VENTILATING PREMIUM RUNNING TEE. A classic favorite, optimized for high-intensity pursuits. The Cirriform Tee is breathable and comfortable, with quick-wicking fabric and mesh body mapping material in the heaviest sweat zone. Whether you're running in the mountains or on the road, the seamless shoulder area is optimized to comfortably wear a running vest. FEATURES Mesh sides and underarm for increased breathability in the body's highest sweat area Reflective logo to help keep you visible when running in low-light conditions SILVADUR(TM) Advanced Microbial Control and moisture wicking Flatlocked anti-chafe seams UPF 20+ Seamless shoulder design for maximum comfort and compatibility with running vests and packs SPECS Sleve Length: 13.75" / 34.92 cm Weight: 3.5 oz / 100.0 g MATERIALS Primary/Body: 87% Polyester, 13% Spandex Secondary: 100% Polyester | Ultimate Direction Women's Cirriform T-Shirt in Zion Size Large