QTOP Reusable Ice Pack Long Lasting Cooler Ice Packs for Cooler Bag, Lunch Bags, Lunch Box, Cooler Backpacks, Freezer Packs (4 Pack Small Size)

COOLER & COLDER & LONGER! A reusable ice packs are made of high-quality BPA-free materials and are the best alternative to traditional ice cubes, with a cooler, faster and longer cooling effect. Perfect for lunch bags, cooler backpacks, breastmilk bags, work and food delivery, make your food/drink chiller and fresher! Put the ice packs back in the refrigerator after use and they will be ready for your next outing. Add Water Once & Reusable The inside of the ice pack is filled with a proprietary cooling gel mixture, just add water at home, shake and seal, and then turn it into a solid block after freezing, which creates a reusable ice pack. Ice Packs' size:7.5 x 6.5 x 1 inches(small size) Included in a set - 4 pcs corks & 1 pc funnel Shipped with dry gel mixture — add water and seal at home