This instant cold pack helps to reduce body temperature and relieves pain and swelling. Convenient to use while driving, traveling, fishing, hiking, or camping. It is disposable, non-toxic, and non-caustic, needs no pre-chilling, and gets cold within 2 seconds. Inner packing: Packed in PE and nylon Dimensions: 15 x 11.5cm N.W.: 100g Outer packing: Dimension: 44.5 x 26 x 45cm N.W.: 11.52kg O.W.: 15kg