Description:Ice Packs for Lunch Bags, Boxes, Coolers, Reusable Slim Ice Pack Long Lasting, Cooler & 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: 19*6*4cm/7.4*2.3*1.5inUse: 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 *4