ZQXPP Z116 Unisex Cycling Sun Protective Uv Cover Arm Sleeves Sport Cooling Sleeve-1 Pair Materials:87% Polyester and 13% Spandex Length: (S)16.5inches (M)17.7inches (L) 18.1inches (XL)18.9inches (XXL)19.3inches (XXXL) 20.1inches Made exactly for the purpose of sun protection and cooling 1 Pair/Set,UV Protection:99.8% High performance fabric;Fast sweat kick-away and fast dry When you receive it,if have any questions about size or quality,please contact us,We will help you to solve it,thank you!