What you get: set of 4 reusable cartoon-patterned ice packs, full of innocence with bright colors and cartoon patterns, enough quantity for personal use, also you can share them with your family members or friends as thoughtful gift. Safe and waterproof: the ice pack has a leak-proof design to ensure that the water stays cold or hot for longer, and it is easy to carry and use anywhere, fine craftsmanship and reliable quality enable you to use for a long time. Fast relief: suitable for cold use, it can relieve slight scratches, abrasions, muscle pain, spray and strain, and swelling, it is recommended to help relieve pain, reduce swelling and speed up recovery, better than gel packaging or other refrigeration, suitable for sports injuries and first aid. Cold and hot use: for cold use, just fill 2-thirds of the ice pack with ice and water to relieve headaches, bruises, migraines, muscle aches and swelling. For hyperthermia, please add hot water (do not boil, note: the temperature of hot water is 50-60 degree Celsius/ 122-140 degree Fahrenheit) to help relieve stomach upset, migraine, sinus and joint pain. Multi-purpose: the 5.5-inch round ice pack can safely and naturally relieve fatigue, sinus headache, puffy eyes, body aches, fever, toothache, pain relief, bites, bumps or bruises, breastfeeding, swelling, child injuries, first aid, etc.