Description:Ice Packs for Lunch Bags, Boxes, Coolers, Reusable Slim Ice Pack Long Lasting, Cooler and Lunch Box Accessories, Cold Freezer Ice Packs, Colder than Ice, Keeps Food Fresh for Camping, Travel, PicnicSpecifications:Name: Camping Ice Packs for CoolersContains: Dried Ice Crystal ParticlesIce crystal box shell material: HDPE high-density polyethyleneSize: 19x6x4cm or 7.4x2.3x1.5inUse: add water to use. Only need to add water once and can be used repeatedly.Scope of application: food cold preservation, breast milk preservation, air conditioning fan, nursing and cooling, barbecue self-driving tour, refrigeration, transportation, etc.Precautions:Do not open the lid to drink the contents of the ice crystal.If ice crystal liquid spills during expansion, you can clean it with a neutral detergent and water.Keep away from fire or high-temperature objectsPackage List:Camping Ice Pack x4