【Large Size to Meet Your Needs】[Large Size (11 Inch)] This ice pack is suitable for adults and is used for sports injuries, pain relief, muscle soreness, etc. You can also choose the right size ice pack for yourself according to the painful area. 【High quality Double layer Material】The inner layer of ice pack is made of durable PVC material to prevent the ice melting to seepage water. The outer layer of ice pack is made of polyester fabric, which is durable and can be used repeatedly 【Convenience amp; Good Sealing】 Ice bag with large cap opening allows for easy filling of ice cubes or crushed ice. Superior Leak resistant Cap with rubber sealed loop and thread design is good sealing and strong leak proof. Compare with gel packs or other packs, soft, waterproof and flexible textile keeps the water to stay cold and hot much longer 【Hot Cold Compress】 For cold therapy, just fill the ice bag with two thirds of ice and water to relieve headaches, bruises, migraines, muscle aches and swelling. For hot therapy, add the warm water to relieve stomach upset, migraine, sinus and joint pain.(Notice: The ideal temperature of hot water is about 60℃/140℉) 【Portable amp; Effective】Ice bags for injuries reusable can keep in work desk, car, home travel bag and training bags. Get quick use at any time. Help reduce pain and swelling from scrapes, bruises, muscle aches, sprains and strains, recommended to help relieve pain and speed recovery