A reusable gel pack that can be used as a heat and cold compress down to -27 degrees Celsius. It's ideal for tendon injuries, muscle soreness, sprains, and stable legs, among other things. You can refrigerate the gel pack in the freezer, warm it in hot water, or microwave it. The Hot/Cold Pack should not be used directly on the skin due to the risk of frostbite or burns. Use the Hot/Cold Pack in combination with the BR Hot/Cold leg protector for optimal results. Size: 24.5 x 17 cm.