I bought a pack of three of these. Stuck them in the freezer and put one in my lunch the next day (in a cool bag). My lunch had even been made with frozen bread (keeps it fresher, and helps keep sarnie cool), and still my lunch was room temp by the time I ate it (noon-ish). I then tried putting the cool packs stand alone freezer, figuring the one with my fridge wasn't cold enough for them. But when I put it in the cool pack the next day, my lunch still warmed up to room temp. So I tried it in another, different cool bag: same results. So I tried two packs together: same results.
I've tried every permutation. My lunch is always COLD going into the cool bag with the mini ice packs. It's always room temp at lunch time. Not nice with yougurt.
DO NOT BUY THIS PRODUCT! I cannot stress this enough, I thought the others who gave bad reviews were just not using packs correctly, but that isn't the case. The Mini Ice Packs just do NOT work to keep food cool.
Perhaps Lakeland should change the product claims. Currently they have written: 'Packed lunches in an office drawer, or cloakroom near a radiator can become a health risk.
Keep them cool for hours with these gel-filled mini ice packs.'
They should perhaps sell these to cool minor sprains or burns and the like, because they DON'T keep food cool 'for hours'. They don't even keep food cool between breakfast and lunch!