The Men's Short-Sleeved Self-Guided Sun Shirt by Patagonia in Thermal Blue is your go-to piece for both style and functionality. Featuring short sleeves and a double-layer collar that converts for extra sun protection, this shirt is crafted from stretchy, quick-drying 100% recycled polyester with 40+ UPF. Made in Vietnam, it offers handy storage with two vertical chest pockets with corrosion-resistant zippers and two button-closure chest pockets. Closure is secured with buttons, and it weighs only 227 g (8 oz).