A new water shirt, the Patagonia long Sleeve Rashguard for men is made from 84% recycled polyester and 16% spandex for an outstanding eco-friendly stretch fit. This formfitting top offers protection against chafing, cold and extreme sun exposure with 30+ UPF sun protection. Design features include a 1/2" mock neck, a set-in long sleeve with seamless underarm gussets, and flat seem construction for superior comfort.