This instant cold pack reduces 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: 23.5 x 15.5cm N.W.: 260g Outer packing: Dimension: 48.5 x 32 x 23.5cm N.W.: 12.48kg O.W.: 16kg