The Kids' Patagonia Long-Sleeved Capilene Silkweight Rashguard is made from cool-wearing, stretchy recycled polyester and spandex jersey that offers 40+ UPF sun protection for long days in the sun. Designed with raglan sleeves to allow full freedom of movement while paddling or playing, it features angled side panels that extend through the sleeves to help eliminate chafing and enhance comfort during active use.