4Pcs Reusable Ice Packs for Cooler, Small Freezer Blocks for Lunch Boxes Air Conditioner Fan Food Shipping Travel Camping

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EFFICIENT LASTING COOLING: These ice packs deliver 6-8 hours of consistent cold, perfect for enhancing evaporative air conditioner fan performance and keeping your room cool all day without frequent refreezing
LEAKPROOF & FOOD-SAFE DESIGN: Made from thick durable PE material with precision-sealed screw caps, these freezer blocks prevent messy water leaks and are food-safe for storing fruits, drinks and perishable items
COMPACT & LIGHTWEIGHT: Measuring 6.29*1.57*1.57 inches, these slim small ice packs fit perfectly into standard lunch bags, backpack coolers and air conditioner water tanks without taking up extra space
4 PACK FLEXIBLE & REUSABLE: The set of 4 reusable ice packs allows you to freeze one set while using the other for continuous cooling. Eco-friendly alternative to disposable ice and dry ice
VERSATILE MULTI-SCENE USE: Ideal for cold chain shipping of temperature-sensitive goods, storage including insulin, outdoor camping, picnics, road trips and keeping school lunches fresh for hours