Below Zero Reusable Ice Packs for Coolers – Long Lasting Cooler Ice Pack Blocks, Leak-Proof Freezer Packs for Camping, Lunch Boxes & Travel

Great for midsize lunchboxes/bags (see dimensions). Keeps things cold in a well insulated bag. The best feature of the fill-n-freeze variety is that we pack them in luggage without the water added when traveling to a hot destination. When there, fill n freeze so your day pack has “ice” to keep your snacks and drinks cold. When leaving, we leave them behind so hopefully housekeeping or the next person using the hotel room/freezer section of fridge will scoop them up and keep using them. One less stop when we arrive at our destination (to by reusable cold packs) and no FAA hassles. These have not leaked nor punctured. Following the directions about how much water to add.

These are not as flashy or cool to look at as the ones sealed in hard plastic but these work so much better. They stay super cold for way longer than regular bagged ice or any of the other reusable ice packs I’ve tried.

These ice packs are amazing and last for long time! This is my second time ordering these as I needed more. You fill them with water and freeze them. They get rock hard and keep items in the cooler cold for a long time! Highly recommend!

Luv them

These ice replacement packs get so cold that I can keep ice-cream frozen for a day if I use multiple packs in a high quality ice chest such as a Yeti. I have been using the larger size for quite a few years and their performance has not deteriorated.

Love these things for keeping my kids lunch cold for several hours. Oftentimes, the pack is still really cold when they get home. Love them so much that I am ordering more!

I live in AZ and leave my very well insulated (7"L X 6"W X 6"H) cooler in my black car at 95F outside and 150F inside. So it is not an easy environment. I use two of these and they fit perfectly in my cooler/Bag. One at the bottom, one at the top. Food and drinks in between, with everything packed tight. These will stay about 50% frozen after 4 hours in the car (lunch time). They are very cold while frozen, which is nice. When I get back to my car 4hrs later to go home, they are completely thawed.Prior to these I used ice in bags, packed the same way and to be honest, although the food and drinks are not as cold (still pretty cold and not enough to spoil), the ice lasts longer, even thru the end of the day.For me, I don't feel these achieved what I wanted. I was hoping to have them still be still be mostly frozen at the end of my work day so I could have cold drinks on the way home. With that said, they still keep my lunch cold, so they do work, but I can do that with regular ice. My situation is extreme heat, but still. If it can't beat ice, it wasn't worth the money, because Ice is free.

It lasted perfectly with ice cream for 8 hrs and maybe longer