Cool It! cold packs are perfect for bumps and bruises. Safe, soothing and reusable, these little critters will help you Cool It! They can also be used as a mini heat packs so you can slip ’em in pockets and gloves for instant winter warmth. Hypoallergenic and non-toxic. COLD PACK Place pack in fridge or freezer for about an hour. When cold enough, place the pack on area in need of soothing relief. HOT PACK Place pack in hot water for about 7 minutes. Do not boil the water. When temperature is right, place on area in need. Do not microwave.