Easy to Use: Ice pack is simple to use. just add the ice or hot water then apply the ice pack to the desired area for cold and hot compresses. Tips: Cold Compress: Fill the 2/3 of ice bag with ice and water. Hot Compress: Add hot water (Not Boiling Water, Notice: The temperature is 50-60/122-140.) No Leaks: Ice Packs is well made of high quality materials. The design of screw top with large opening and rubber sealed loop. Easy to fill with ice cubes, Strong leak-proof. Soft, waterproof and flexible textile keeps the water to stay cold and hot much longer than gel packs or other packs Great Size: Perfect sizes to meet much needs of use. Reusable ice bag is suitable for different body parts children, youth, adult men/women. Lower Back, Back, Neck, Knee, Arm, Forehead, Teeth. According to the size of the pain area to fold the right size Versatile & Convenient: Ice bags for injuries reusable are versatile and convenient tool for pain relief. Hot cold compresses is suit for Arthritis, Menstrual Pain, Headache, Fever, Migraine Relief, Reducing Swelling, Lower Back Pain Relief, Toothache, Sprains, Strains, Bruises, Post-Surgery Recovery and more Flexible & Portable: Ice pack is lightweight, flexible and portable. It is easy to take with you wherever you go. You can use the ice bag at home, at work, or in travel. Get quick use at any time. When muscle pain and soreness caused by regular exercise and work or headaches caused by a hangover on weekends or holidays