High Quality Materials:Our ice packs are made of high-quality polyester materials, with long life and wear resistance, and the exterior is coated with PVC to prevent leakage. Adequate Packaging:Our ice packs are available in 3 sizes,6inch 9inch 11inch, which can fit different body parts, and can also be used as a hot pack. Just add warm water and tighten the cap. Easy Use: For cold therapy, just fill an ice pack with two-thirds of ice and water to relieve headaches, bruises, migraines, muscle aches and swelling. For heat therapy, please add warm water to relieve stomach upset, migraine, sinus and joint pain. Portable Ice Bags: Compact and comfortable design of the bags allows you to carry the ice bag in your work desk, car and home for grab-and-go comfort from pain. Wide Application Ideal for application of cold therapy to help reduce pain and swelling from minor scrapes, bruises, muscle aches, sprains and strains, recommended to help relieve pain, reduce swelling, and speed recovery.