Fit & Design: PERFORMANCE that moves with you Single-layer, jersey knit fabric Fabric Weight: 5.25 oz Fiber Content: 85% ColdPruf (R) Technical Fiber Polyester with SILVADUR(TM) Intelligent Freshness / 15% Spandex Crew neck Wicks moisture and dries quickly Flat seams to prevent chaffing Set-in long sleeves Technology: Features SILVADUR(TM) technology to minimize odor on the fabric Additional Details: UPF Rating of 50+ Country of Origin: Imported Brand: ColdPruf