Features: 1. The soft outer fabric is elastic and fits the skin and body 2. The duration is longer than gel ice packs 3. Leak-proof, no sweat, no soaking 4. Makes you feel calm and comfortable Precaution: 1. Heat treatment is used as a hot water bottle to keep the internal temperature below 60 C (140 F). 2. Do not put or store in the freezer refrigerator. 3. Keep out of reach of children, especially when pouring hot water. 4. Do not put the bag in a microwave oven to heat water. 5. Do not use hot packs for more than 20 minutes on the same part( If necessary, these packs can be used multiple times a day) How to Use Cold Hot Packs: 1. Turn counterclockwise. 2. Use cold water, ice water, alcohol, crushed ice or ice blocks to fill the ice pack in two-thirds as a cold pack. Pour two-thirds of warm water (not exceeding 60 C 140 F) as a hot water bottle. 3. Turn clockwise until it is secured. 4. Turn the ice pack upside down and press the bottom firmly to test for leakage. 5. Apply to any required area. 6. Apply an ice pack for 20-30 minutes at a time (maximum), and a hot water bottle for 10-20 minutes at a time (maximum). Continue to reapply after injury. Wait hour between applications. Specification: Name: Blue Ice Pack Size: about 6 inches, 9 inches, 11 inches Weight: 6 inches: about 65g, 9 inches: about 95g, 11 inches: about 125g Packing List: 1 x Medium Size Ice Pack Note: Please allow slight differences in size due to manual measurement, and lighting in photography may result in difference in color than it is in real life.Safe and Waterproof-The advanced leak-proof lid with large lid opening can be easily filled with ice cubes or crushed ice. Soft, waterproof and flexible textiles keep water hot and cold for longer than gel packs or other packs. Used as Ice Pack: Easily add ice blocks and a little bit of water to make a beautiful ice pack. Apply an ice pack on the desired area to keep you calm and cool. Stay long cool: Designed to fit any body , soft fabric provides comfort and coverage to injured area, stays cold much longer than traditional gel packs, ice packs or other cold packs. Portable and Safe: Safe, reusable and portable, non-toxic. Cold water or hot water can be used multiple times. In small size, easy to carry, and can be carried with you when traveling to prevent accidental sprains. Leak-proof, no sweat, no soaking.