
I read many other reviews about this product before purchasing and I have to say these ice packs stay cold until the child's lunch break. They're the perfect size to fit in a lunch box to keep you cool without taking up all the space. I packed lunch around 7:30, lunch was at 11 and everything was still chilly. However, at three o'clock the ice pack was still cool but the entire lunch box was not cool at all. Only the objects that were in direct contact with the ice pack and only the side that touched the ice pack were still moderately cool. I hope this helps others decide if they want to buy the slim package.

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