Vesture Hot to Go Heat Pack – Keep Food Hot – Replacement Microcore Pack for Casserole Carriers (Red

Does the job better than any others
These are wonderful in pyrex portables and keep my casseroles piping hot. I heat them according to time specified and tuck under the flap in pyrex portable carrier. I take my 9×13 baking dish piping hot out of oven and place on top of the bottom flap. Then I heat second one and place over lid that covers my dish and zip up. I have had the two keep a casserole dish very warm for over 3 hours without having to reheat on arrival to where I was taking it. I left carrier zipped until time to eat and found food to be serving temp warm to hot. The packs are still quite warm to touch even after more than 2.5-3 hours as my trip was 1.5 hours and we did not eat for an hour or more after arriving. Highly recommend but be careful not to overheat as bag will fill with air and burst. Also if using in a carrier with no pocket for the hot pack, I would recommend a towel or heavy layer of paper towels over pack before putting dish just out of oven directly on the pad. I usually warm the pad 15 sec less than recommended time then set another 15-20 sec where I am watching constantly for any sign of swelling. You must stop microwave immediately if it starts to swell. Also be careful not to get sharp object near hot pack. I’ve had these last many years without problems. If a small puncture occurs then gel can leak out and pack will feel very light. It is no longer usable at that point. The other hot packs that you can feel the liquid slosh around in them are not nearly as good as these are at retaining heat so don’t waste my money on them.

Do not overheat!
I use the pad for my children’s lunch. I heat up the food in the morning. Put this under the lunch box in a thermo lunch bag. It does a great job, even in winter. Lunch stays hot (not just lukewarm) after a few hours. I’ve tried multiple things and this alone serves my purposes. Thermo food jar is fine too, but you can’t stuff everything in a jar! This allows me to make different lunch meals, often in Asian bento style, and even pizza and fries. I do have some complaints though. (1) I wish the manufacturer would make this in a smaller size, namely the size of a lunch box. This is too large and super heavy. I feel sorry for my kids who have to carry this on their back all day. (2) Beware: It leaks! The recommended heating time is 3 minutes and 45 seconds in a microwave oven at my capacity. I followed the instruction, but after several months it started leaking clear liquid. I think it is just water (?), but it got everything in the backpack wet. Very annoying. Once it starts leaking, it does not stop. It puffs up when heated, and leaks everywhere as it releases the heat. I have had the same problem with 2 pads, and just had to replace them after a while. Still, I have not found a better solution so this continues to be my go-to lunch method.

Worked better than my hot/cold pack for keeping things hot.
I ordered 2 the same day as the double layered insulated bag from Amazon. They were supposed to arrive before 9PM the next day. Amazingly, they arrived before 10am the next day as I was getting ready to leave for a football tailgate (50 miles away). I followed the package directions for heating in my 1000 watt microwave. They are larger than the hot /cold packs I bought locally. I kept trying to get my hot/cold packs warmer and made a mistake and overheated one pack causing it to swell and leak. I had to discarded it. So when my Amazon hot packs arrived before 10AM even though they were promised by 9PM I was ecstatic ! I was able to use them for a tailgate that day! They kept my quiches warm for what took 2hours travel instead of the normal 1hour. These heat packs stayed warm for a before game tailgate, after game tailgate and a total of 3hours travel time. I will order at least one more for a one layer carrier that I bought from Amazon last year.

Nice replacement
Needed a new heating pack for my travel container and this works great!