Feature:1. Cold Hot Therapy: The ice pack can limit blood flow, reduce swelling, and relieve muscle spasms. The heat pack can relieve soreness symptoms and improve discomfort and soreness.2. Large Opening: The large opening makes filling with ice or water. For cold therapy, simply add ice and water up to 2/3 full and apply. For hot therapy, simply add warm water up to 2/3 full, taking care not to boil. The ideal temperature for hot therapy is 5060.3. Suitable for Adults: These reusable ice packs are perfect for neck, chest, ankle, leg, knee, abdomen, back, shoulder, and knee cap, give you comfortable experience.4. Reusable: These soft, waterproof, and flexible cold therapy wraps keep cold water and hot water effective for longer periods than other gel packs or bags.5. Perfect For Various Conditions: These ice packs help to reduce sports or post surgical swelling, arthritis flare ups, headaches, fever and toothache.Specification:Item Type: Cold Ice PackMaterial: ABSHow to UseUsage 1 (cold compress):1. Open the lid, put a small amount of water and then put the ice cubes in. The volume of ice cubes accounts for 1/2-2/3 of the capacity of ice packs.In order to prevent water from leaking out, cover the lid tightly. Note that the lid is not easy to seal when it is tilted.3. Put the ice pack in the cold compress area and fix it with bandage or special protective gear.4. In order to prevent the ice pack from being too cold, towels and underwear can be used as cushions. 5. In order to prevent the edges and corners of the ice cubes from cutting the bag, you can use water to wash away the edges and corners of the ice cubes before using them.Usage 2 (hot compress):1. Open the lid and inject warm water below 60 to 2/3 degree. 2. Sealing, warm compress parts separated by towels or underwear.3. It is more convenient to inject water with a water heater with temperature regulation function..Package List:3 xReusable Cold Ice Packs