71% Polyester, 21% Cotton, 8% Spandex Imported HUK KONA SHORT SLEEVE SHIRT: Versatile button-down optimized for comfort and convenience both on and off the water. Crafted of lightweight, breathable, quick-drying fabric with two-way stretch and a built-in microfiber sunglasses wipe SUN PROTECTION: This fishing shirt protects your skin from the sun's harmful rays - Huk added the most advanced sun-blocking UPF materials to their apparel to block both UVA and UVB rays SUPERIOR BREATH-ABILITY: Huk performance shirt includes special fibers that transport sweat away from the skin and synthetic materials that allow air to pass through to create superior breath-ability STRETCH: Fabric gives you the flexibility and stretch you need for comfort, while maintaining shape and fit MOISTURE TRANSPORT: Keeping dry is critical to keeping warm on the cold water - Hydrophobic or "water-hating" quality within the fibers of this fishing shirt, transport sweat away from skin to the exterior of the shirt where it can evaporate efficiently