Patagonia's Long-Sleeved Capilene® Cool Sun Shirt provides 40+ UPF sun protection, plus moisture-wicking and fast-drying performance. Single-knit construction generates a naturally sun-protective effect that won’t wash out over time. Made with 100% recycled polyester jersey, Capilene® Cool Sun styles are our most sun-protective tech tees, designed to manage your body’s microclimate during long, exposed days on the water or in the mountains when you’re working up a sweat. Made in a Fair Trade Certified™ factory.