Polar Bear Ice Packs are used in the pharmacutical indastry for fridge line items, the product is used when the fridge items are transported to the customers , this is to avoid a " cold chain been broken" The amount per box is 32 units. The ice packs can also be used when you go camping instead of normal ice, the ice packs last longer and can be re-used as it can be frozen many times over & over saving you money by buying ice & throwing it away at the end of the day. This product has been tried , tested & proven itself to work.