Must have thoughtful gadgets for office , home, sporting events, even a business trip. Very cold therapeutic application to help relieve pain and minor bruises, contusions, sore muscles, sprains, and strain swelling Can also be used for hyperthermia, just heating the water (not boiled) to help relieve stomach upsets, migraines,sinus and joint pain. Excellent leakproof cap with large cap opening for easy filling of ice or crushed ice Product use: The use of high-quality polyester-cotton material, the surface is delicate and shiny, clear lines, smooth edges and feel comfortable. Product Name: cartoon hot and cold multi- water bag physiotherapy bag Material: PVC+Polyestercotton Capacity: 450 ml Product weight: about 70g Color: Color mixing Size: 14.5*14.5 cm Package includes: 1x Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.