Package contents - 6 pieces of reusable ice packs for injuries: two 6 inch white bags, two 9 inch blue bags, and two 11 inch dark blue bags. These are sized to meet family needs. Versatile hot and cold therapy - Refillable ice packs that can hold ice cubes to apply a cold compress, or hold hot water to create a warm/hot compress. They are suitable for both cold and heat therapy. Pain relief and swelling reduction - Designed to help relieve pain and reduce swelling from bruises, muscle aches, sprains, and strains. Ideal for sport injuries and general first aid. Sizes and compatibility - 3 sizes available: small (6 inch), medium (9 inch), and large (11 inch). Suitable for different body parts such as wrists, knees, and back. Appropriate for users of all ages, including children, teenagers, and adults. Use scenarios - After sports or workouts: use the appropriately sized pack on ankles, knees, or other affected areas to reduce swelling and discomfort. - Muscle soreness or minor injuries: apply cold therapy to tired or sore muscles, or use hot therapy to relax stiff areas after activity. - Home first aid for the family: versatile packs that accommodate different ages and body parts for common injuries or aches. How to use - Cold therapy: fill the packs with ice cubes and apply to the affected area as a cold compress. - Heat therapy: fill the packs with hot water to create a warm compress.