Below Zero Small New Reusable Ice Packs for Large Coolers and Lunch Bags – Patent Pending Coldest and Longest Lasting Technology, Upto 8 Hour Cooling Ice Gel Pack - Factory Sealed

They do keep things cold. I actullay had them create a thin layer of ice in a container i put them next to. Works well for me.

These things keep food and drinks cold for a long time! I never have to worry about my food getting warm in my lunch box. (About 5 hours from the time these ice packs are taken out of the freezer until my lunch break).Point of amazement: I take some cottage cheese packages for my lunch occasionally. Note, I keep the cottage cheese in the fridge not the freezer. I had one in my lunch box with 3 of these ice packs, and by lunchtime the cottage cheese was nearly FROZEN. It's happened several times since then 10/10 would buy whenever I'll need them again in the future.

These work good but are a little smaller than I expected. My fault for not paying attention to the size when I ordered. I am using them in an evaporating cooler.

These worked great at first but began leaking a thick clear substance after just a few uses.

I was so excited to finally find an ice pack that would keep my breakfast, lunch and snacks cold all day. It was frozen solid this morning and before 4pm it was hardly cool and liquid inside. AND I threw my old ones away!Very disappointing!UPDATE -I hope the company did not bother going forward with the patent. (it says pending) These are poor quality. From day one would not stay frozen for more than a few hours. Now they don't even freeze after 18 hours in the freezer; they are still liquid. And they are now leaking. My lunch box in a swimming pool. Time to buy some new ones that will actually keep things cold.

Excellent product works as described. Fits perfectly in my children’s lunchboxes.

Used fore trips upto 10 hrs long and they kept the items cold.

These seem to leak a sticky substance and really only stay cold for 5 hours.