The O'Neill Skins Series provides clean graphics, ergonomic seam placement, quick dry properties, and serious UV protection. If you plan on spending a lot of time on the water this season, then you'll want the Basic Skins SS Rash Tee on your back. . Flatloc construction utilizes an overlapping, breathable flat stitched seam to eliminate chafing. Rash protection guards your skin against chafing caused by paddling also protects you from wax irritation while surfing. Ergonomic, seamless undersleeve panels allow for unrestricted movement and offer protection from rashes and chafing. UPF 50 protects against harmful UV rays recommended by the Skin Cancer Foundation as an effective UV protectant. Small loop at the bottom lets you lace the shirt to your boardshorts so it wont ride up.