If the blue ice is frozen over night, how long does it keep your food cool for inside an insulated pack?
1067132
I'm not sure what the manufacturer says but mine has lasted about 8 hours in an insulated lunch bag. They do sell other thin ones that would work alongside what comes with it.
1067133
My food has stayed cold for up to 5hours, which is the longest I've waited to eat. I was inside, so I don't know how being outside would affect the time.
1067134
I use this in my daughter's lunch box and nothing in there needs to stay really cold. She eats only a few hours after it is packed. I can tell you that it is not still cold when she gets home about eight hours later. If these were used with the lunch bags that go in the freezer (which don't even require a cold pack) I have no doubt that everything inside would remain cold all day!
1625133
The cooler bag is insulated but is not designed to maintain heat for several hours. A thermos is recommended for keeping hot food hot. Additionally, I do not recommend putting an extremely hot container inside the cooler bag as the inside could be damaged by excessive heat. If a cold lunch is packed, an ice block should be included to maintain a cold temp for several hours. Food should already be chilled when packed. Do not store in the sun or a hot car. - Kelly Lester, ceo, EasyLunchboxes
1172815
I don't know I use it for heat. I would imagine maybe only up to an hour. I bought the things that look like blue peas and put it in the freezer. Stays cold several hours.
776141
If you keep your cold packs on the frig and not the freezer you won't have any freezing problem. I have immunology serums that I keep for a trip that involves an overnight stay and the serums are still cool when I'' able to put them back in my frig.
22621
You got to pack some ice in it if you want it to stay cool for more than one hr
1172813
Like any other ice pack, I does not stay cold forever. If you're looking to have it stay cold overnight, this is not the one for you. I'm not sure of any ice pack that stays cold that long......?
815225
It is not insulated. Will not keep food warm or cool. Perhaps putting it in an insulated bag to keep it warm?
235807
This model is not insulated but Contigo deos make an insulated version that actually keeps ice cold up to over 7 hours. My friend bought it recently @ Costco. She put ice in her water and by the end of the workday the ice was still in her bottle though she drank the water.
647437
It is insulated. Does a pretty good job of keeping food cold with ice pack.
1401659
The solid blue item holding the two vials in the photo must be put in the freezer for several hours. After that time, the frozen holder and the vials are put in the insulated nylon bag shown. It keeps it cool for many hours of use.
1922304
I agree with Hana - if the bus is regulated temperature, the items will no longer be frozen after 7-8 hours. At about 3 hours, frozen items begin to get soft (I transport frozen or cold food in this bag every weekend on a 3 hour drive.) You might look into using dry ice for packing.
601246
We use dry ice. It keeps the packs frozen. The packs themselves also last three hours or so for my mom. Ice won't re-freeze them but will cool them enough to be of use again
786661
I always use an ice pack to keep my food cool. Never considered not using an ice pack. Hope this helps!
777561
if you keep ice roller in the freezer over night, it will stay cold for many hours.
188457
It stays cold for quite a while. I personally freeze it. Unless you're not wearing a lot of layers I'm not sure you'd be able to feel as much relief from the pack with just refrigeration. I will say you need to be careful about leaving it on too long- I once fell asleep with it on and woke up with minor frost bite on part of my leg that was directly exposed to the pack.
690230
its insulated but it will only stay cold for about 3-4 hours. ice pack is best
371528
I have only used for cold items. I use 3 small ice packs and stuff is still cold after 10 hrs.