Hike the trail or explore the city in this lightweight active button-up. Features like UPF 50+ sun protection and Hyperdry moisture wicking will keep you cool and comfortable all day long. The standard fit is true to size, not too roomy but not too tight. Men's active button-up shirt Standard fit Weight: 130 GSM Polyester cotton elastane blend Lightweight feel UPF 50+ sun protection O'Neill Hyperdry moisture wicking Wrinkle resistant 69% Polyester, 22% Cotton, 9% Elastane