Athletic performance, pace-setting, and fatigue are all guided by signals relayed between the brain and the body. Cooling the hand stimulates thermoregulation signals to the brain, which has been scientifically shown to improve athletic performance and delay fatigue. Cool Point, the original hand cooler, helps you outrun the heat with patented Stay Cool technology. The reusable 4-Ounce gel pack straps comfortably to the palm and stays cool for 60+ minutes.