Designed for high output mountain training in cool weather, the versatile Ensa Zip Neck is made from Shaide(TM) 100% polyester to provide a high level of thermal regulation, air permeability, sun protection and moisture wicking performance. The deep front zipper provides ventilation on the fly, and reflective elements add a level of visibility in low light. Features: Moisture-wicking Breathable Lightweight Durable Quick-drying Strategically placed seams increase comfort and reduce chafing Flatlock seams lie flat for added comfort Four-way stretch textile Anatomical shaping for fit and comfort Gusseted underarms Zip neck Long sleeves Reflective logo Reflective blazes for enhanced visibility in low light UPF rating 45+ Athletic Fit, Hip Length Weight: 165 g / 5.8 oz Activity: Training/Fitness / Running Materials: Shaide(TM) 100% polyester, 150 g/m. Midweight knit fabric with a smooth outer surface and wicking inside face that aids moisture management.