Rosybeat Cycling Sleeves Armwarmers Sun Protection Arm Cooling Sleeve One Pair 100% Spandex Be made of Lycra,spandex includes,breathable and have a good function on UV protection and Air permeability High Performance Fabric,Standard quick moisture absorption in water repellency,Fast Sweat Kick-away and Fast Dry, have good function for keeping drying and cooling Better in elasticity, tight but extreamly comfortable wearing,gel gripper keep the sleeves on right position and not move Professional sewing and tailoring,varied colors includes, and the prints and colors is Full dye sublimated,would be never fade out Unisex,Perfect for All Outdoor and Indoor Activities even wear on Work-space, SIX SIZES for choose,just see the detailed sizes information shows in the pictures