These sleeve can help your body actually cool down. Dynamic print shows when you are warm simply splash the fabric with water and the sleeves will cool you down (print disappears when your cool) In addition to this the Castelli Chill Sleeves also have an UPF protection rating in excess of 50 to help prevent sun burn and associated loss of performance.
Active cooling plus 50+ UPF solar protection
Made with Prosecco Ice fabric.
Energy-activated technology provides more cooling than sweat evaporation alone.