A great fit, maximum sun protection, and eye catching graphics make the O'Neill Side Print Crew a must have for fun in the surf and sun. . Quick drying polyester and spandex fabric with 4 way stretch. UPF 50 for maximum protection from harmful UV rays. Strategic seamless paddle zones: ergonomic under sleeve panels allow for unrestricted motion and eliminate rash. Rash protection helps prevent chafing and wax irritation caused by paddling. Flatlock construction with breathable, overlapping flat stitched seams offers chafe free comfort and superb durability for warmer conditions.