Here's the UPF 50 sun protection you need for a day on the water, with T-shirt styling that makes it a comfortable option for walking the dog or mowing the lawn, too. The soft, lightweight fabric also features a moisture-wicking finish to help keep you dry and comfortable, stretch for comfort and flatlock seams that strategically follow the body for easy movement. UPF 50 protection fights harmful UV rays Moisture-wicking finish helps in the heat Stretchy jersey knit allows full range of motion Breathable yet durable fabric dries quickly Solid colors: 84% polyester/16% spandex; Heather colors: 88% polyester/12% spandex. Machine wash. Imported The Skin Cancer Foundation recommends this fabric as an effective UV protectant only for covered areas