1Pairs Arm Sleeves Cooling Athletic Sport Skins Sun Protective UV Cover black color UV Protection over 99% - protect your arms from over exposure of the sun's harmful rays Random characters are printed on the cuffs. Bike Arm Sleeve used for protecting arm from UV rays and it's cool more than bare skin It can keep you dry and cool in the hot condition and warm in cold condition One size fit with extremely elastic material (if you are tall or your arms are big, these probably won't fit) High Performance Fabric; Fast Sweat Kick-away and Fast Dry