STAY FROSTY WITH THE COLUMBIA FREEZER ZERO ARM SLEEVE.It's hitting 100-| soon, but the Columbia Freezer Zero Arm Sleeve will keep your arms feeling cool and protected from the sun. Take on the daytime temperatures of the southwest desert, the Omni-Freeze ZERO technology gives you sweat-activated super cooling. The Omni-Shade UPF 50 sun protection makes sure you won't get burned by the blazing sun. FEATURES89% polyester / 11% elastaneOmni-Freeze ZERO sweat-activated super coolingOmni-Shade UPF 50 sun protection