Review on CleverMade Medium-Sized Reusable Ice Packs - Long-Lasting And Convenient Solution For Insulated Coolers & Lunch Bags - Keep Your Food And Drinks Cold Without The Need For Ice - Set Of 4 by Sean Julian

I had out some lasagna in my lunch bag with two of these Ice Packs. Then I was invited out to lunch and forgot about the bag. At the end of the day, the two ice packs were still frozen and the lasagna still cold. In the past I would have probably tossed the lasagna for being out so long, even in an insulated lunch bag. This time I was able to save the food for the next day.