The Relief The Pain Ice Bags are made of canvas and PP material, which are leak-proof and waterproof. Available in 3 sizes (6, 9, and 11 inches) for different requirements. Suitable for cold and hot therapy. Ideal for pain relief, muscle aches, sports injuries, and first aid. The superior leak-resistant cap and large cap opening allow for easy filling of ice cubes or crushed ice. The soft, waterproof, and flexible textile enables the water to stay cold and hot much longer than gel packs or other packs. Features 1. 3 SIZE DESIGN FOR DIFFERENT REQUIREMENTS: Small 6 inch and medium 9 inch for children and teens, large 11 inch for adults. A must-have product for sport injuries, pain relief, muscle aches and first-aid etc. 2. EASY TO USE AS HOT & COLD THERAPY: For cold therapy, simply fill the ice bag two third full with ice and water to relieve discomfort from headaches, bruises, migraines, muscle aches and swelling. For heat therapy, add hot water to help soothe an upset stomach, migraine, sinus and joint pain. 3. LEAK-PROOF: Excellent leak resistant cap, and waterproof design. Note: There is solidified water outside the ice pack, that is a normal physical phenomenon, not a pack leaking. 4. INSTANT PAIN RELIEF: The ice bag packs are ideal for application of cold therapy to help reduce pain and swelling from minor scrapes, bruises, muscle aches, sprains and strains; Suitable for sport injury and first aid. Recommended to help relieve pain, reduce swelling, and speed recovery. 5. SAFE & WATERPROOF: Superior Leak-resistant cap with large cap opening allows for easy filling of ice cubes or crushed ice. Soft, waterproof and flexible textile enables the water to stay cold and hot much longer than gel packs or other packs. Specification Material: Canvas, PP Color: Blue Size: 6 inch, 9 inch, 11 inch Weight: 65 g, 90 g, 125 g Package Include: 1 Ice Bag