KastKing Arm Protector Cooling Sleeves SPF 50 UV Protection for Fishing, Cycling, Boating Imprinted with Official Logo HIGH PERFORMANCE 88% polyester fabric 12% Spandex. High performance fabric keeps you cool even on the hottest days and keeps you warm in cold temperatures. Cooler than bare skin! PROTECTION SPF 50 UV Ultraviolet protection. Perfect for wear with a KastKing tee shirt to protect your arms. PERFECT FIT Each set has one pair of KastKing arm protector sleeves. Elasticity allows a perfect sleeve fit no matter how big your muscles are! Choose Med, Large, XL COMFORTABLE Durable flatlock seam stitching allows flexible full range of motion without chafing or skin irritation. QUICK DRY KastKing logo Imprinted with special digital printing technology that does not fade and maintains its colors.