EasyLife 2 Pieces Air cooler Ice Packs Freezer Packs, Ice Packs For Lunch Box

There is frozen powder in the box, please open the lid, and add the appropriate amount of water, not too full. Ice packs are used in coolers to keep perishable foods (especially meats, dairy products, eggs, Cold Pack for Lunch Box, etc.) below the 5–75 °C (41–167 °F) danger zone when outside a refrigerator or freezer, and to keep drinks pleasantly cool. Both ice and other non-toxic refrigerants (mostly water) can absorb a considerable amount 0 °C (32 °F) used to keep food cool in portable coolers or as a cold compress to alleviate the pain of minor injuries.