The Reusable Hot and Cold Pack is ideally suited for the ceaseless treatment of a physical issue at home when you approach a microwave or cooler. The pack is great for treating many wounds and they last longer than a standard moment hot or cold pack. Utilize warm water for successful alleviation from strong and joint throbbing painfulness, and cold water water for successful alleviation from strong and joint throbbing painfulness, and cold water for lessening enlarging and irritation. The pack will stay adaptable at low temperatures. Basically, keep the pack in the cooler to keep it cold or intense in the microwave to utilize hot. We suggested that you enclose the pack with a material or sleeve while applying the pack straightforwardly to the skin. Reusable. Pack Size 16 x 28cm,13 x 14cm,13 x 30cm,12 x 29 cm.