Our most sun-protective tech tee offers 40 upf coverage with wicking and fast-drying performance. Single-knit construction generates a naturally sun-protective effect that won't wash out over time. Built with 100% recycled polyester jersey, all capilene cool sun styles are 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. A fair trade certified factory.