About this projectSmart 3-pack design to meet different needs. [Large (11"), Medium (9"), Small (6")] - The small ice pack is perfect for children or minor aches, while the two larger ice packs are perfect for teens and adults.Quick Relief - Great for applying 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. Stays cool much longer than gel packs or other cold packs. For sports injuries and first aid.Premium leak-proof lid with large lid opening for easy filling with ice cubes or crushed ice.It's easy to use - just add ice and water to relieve headaches, bruises, migraines, muscle aches and swelling. For hyperthermia, add hot water (do not boil, note: 50-60C/122F-140F for hot water therapy.) to help relieve stomach upset, migraines, sinus and joint pain.Must-Have - Keep a handy ice pack at your desk, car and home for easy access and pain-free. Whether you're experiencing a weekend hangover, a headache or the pain and soreness of a recent visit