Keep your arms and hands cool and dry during fitness activities with NU Activewear Arm Cooler Sleeves. These innovative sleeves utilize permanent nano jade powder embedded in the yarn to lower skin temperature by 2-3 degrees. Plus, exclusive Iceberg Dry technology ensures efficient moisture absorption and evaporation, keeping you comfortable and dry. Perfect for fitness enthusiasts, these arm sleeves offer UPF50 protection for added peace of mind.