Vesture Microcore 8" x 12" x 1" Heavy-Duty Thermal Hot or Cold Pack - 40 oz.

Great for those casserole bags so I can keep hot foods hot. There weren't any instructions provided, but I microwaved it in 30 second increments (1000W) until the pack was hot (about 2 minutes).

This ice pack is amazing. I have used it to transport food that needed to stay cold. I love how you can bend it how you need it to lay. It is a very nice product, no leaking and freezes quickly. The ice stayed frozen solid throughout my entire event. Great product: I will highly recommend.

We used these inside our insulated delivery bags. The packs keep the food warm for an extended period of time. I'm looking forward to testing the cold pack capabilities as well.

This has saved the day numerous times. best part it can replace ice in coolers which makes clean ups much easier, since not having to dump anything out. TO heat i prefer the boiling water method, gets it very hot.

I use these for a school lunch catering company. Initially these worked great, they hold the heat very well. However, over past six months, I have had to continually order more because they develop leaks. I am hoping to find a brand that will last longer.

I didn't give these a five star as they are not the easiest items to figure out. For cold use, just throw them in the freezer, just as any other cold pack, However to use for heat they are rather more difficult to figure out. they do not come with any instructions to heat up. ie. How long do you microwave them for! There seems to be no instructions online, so it's just trial and error. I've actually found that Nuking them at half power for longer is better than high power as they seem to heat more evenly. The only instructions I found online had me heat them for 2 mins on High. This did very little. I nuked them for about 6 mins on Medium, they worked much better that way, but I guess it depends on the Microwave. It Read More

Great to have for catering. I use them in my cambro boxes when transporting hot or cold food. It keeps the food close to temperature for the time needed.

These packs work really well to keep my food hot. They last a while but not forever. I've had several burst, but this has been after multiple uses. They tend to last around 4 months (sometimes longer).

Love these. Thin and keeps cold longer than the nordic ones.

I have used this product for over 8 years, for both cooling and warming. None have sprung leaks, and I suspect overheating causes the leaks. Based on 1000 watt microwave power, I heat them at 75% power for 45 seconds, let rest 1 minute, then another 45 seconds. Freezing is simple, but when they are flexible stack them carefully, as if you stack them more than 3 tall, some may not freeze completely.

I heat them up and keeps food warm until I eat it.

This was a great purchase. I make patties and will use this to keep them hot or warm before purchasing. The patties remain warm straight up to the point that it is sold. A total up to 4 hours which is perfect

We used to use cloth packs filled with lentils but these heat much faster and stay hot longer. They don't last forever and will inflate if you overheat them and eventually start to leak. I attempted to save a couple by vacuum sealing them but they don't work as well after that.

These hot/cold pads are great for our delivery needs. They seem to be holding up well after multiple uses. We plan on purchasing more soon!

Reusable, and non-toxic, the Microcore thermal hot or cold packs add reassurance, on long trips, that proper temp. is maintained. Recommend this product for it's quality and price.

These are ok, they rip easily and the thicker nordic core packs work much better. I have used duct tape to cover the splits and it is better.

Great product. I use two frozen packs on the bottom of my insulated food delivery bag. They staty cold for a long time and provide added stability to the delivery bag.

Fit nicely in a half-size delivery bag, and kept our food hot for several hours during my daughter's grad party. I was actually surprised that nothing had to be discarded for holding temp at the end of the party!

These are perfect out of the freezer to keep items cold for hours. When you heat them in the microwave they are great at keeping hot food hot.

I was skeptical when I bought these hot/cold packs but I had a large event that I would need to keep some food cold and other hot. I was happy that when using for hot and cold the foods stayed within safe temps. used in a holding unit.