4.7

Rated 4.7 out of 5 stars

91 Customer Reviews

73 reviews rated this 5 out of 5 stars.

13 reviews rated this 4 out of 5 stars.

4 reviews rated this 3 out of 5 stars.

1 reviews rated this 2 out of 5 stars.

0 reviews rated this 1 out of 5 stars.

Customers Say

Customers appreciate the versatility of these thermal packs for both heating and cooling, noting their effectiveness in maintaining food temperatures during transport. While generally durable, some users report issues with leaks over time. Instructions for use are not included, leading to some trial and error in heating methods.

  • hot
  • cold
  • great
  • food
  • packs
  • pack
  • heat
  • cooler
  • hours
  • long

This AI-generated summary was created from real customer reviews

Customer Photos & Videos


Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Angela K.

Posted on 02/11/2020

Verified Purchase

Size:
10" x 14", 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).

3 out of 3 found this review helpful

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Jamyce D. from 7574699952

Posted on 12/10/2020

Verified Purchase

Size:
10" x 14", 40 oz.

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.

2 out of 2 found this review helpful

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Philip M. from Carolina Girl Catering LLC

Posted on 02/19/2019

Verified Purchase

Size:
10" x 14", 40 oz.

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.

2 out of 2 found this review helpful

Rated 4 out of 5 stars
Rated 4 out of 5 stars
Review by

Rasheed B.

Posted on 03/09/2018

Verified Purchase

Size:
8" x 12", 40 oz.

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.

2 out of 2 found this review helpful

Rated 2 out of 5 stars
Rated 2 out of 5 stars
Review by

Donna P. from WT Cafe

Posted on 11/12/2015

Verified Purchase

Size:
8" x 12", 40 oz.

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.

2 out of 2 found this review helpful

Thank you for the review, Donna. We are sorry these hot / cold packs have been leaking for you. We would like to address this issue. A Customer Solutions Representative will contact you shortly.

Rated 4 out of 5 stars
Rated 4 out of 5 stars
Review by

Stuart A. from The Food Collective

Posted on 01/13/2020

Verified Purchase

Size:
8" x 12", 40 oz.

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

1 out of 1 found this review helpful

Thank you for your review, Stuart Anstead! We are sorry about the trial and error you had to perform on this Microcore 8 inch x 12 inch x 1 inch Heavy-Duty Thermal Hot or Cold Pack - 40 oz. Our Customer Solutions team has been notified of this instructional issue. Please reach out if you have any questions!

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Christopher C. from Just Eat This Catering

Posted on 10/24/2019

Verified Purchase

Size:
10" x 14", 40 oz.

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.

1 out of 1 found this review helpful

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Lisa L.

Posted on 04/08/2025

Verified Purchase

Size:
10" x 14", 40 oz.

This Thermal Pack is perfect for food deliveries! It actually keeps the food warm for a long time, making a big difference in maintaining quality. I haven’t used it as a cold pack yet, but for heat, it works amazingly well. Highly recommend!

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Patrice J.

Posted on 09/09/2024

Verified Purchase

Size:
10" x 14", 40 oz.

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).

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Kevin L.

Posted on 08/03/2024

Verified Purchase

Size:
8" x 12", 40 oz.

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

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Keith K.

Posted on 06/24/2024

Verified Purchase

Size:
8" x 12", 40 oz.

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.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Donald W.

Posted on 12/21/2023

Verified Purchase

Size:
10" x 14", 40 oz.

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

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Tesha R.

Posted on 05/09/2022

Verified Purchase

Size:
10" x 14", 40 oz.

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

Rated 4 out of 5 stars
Rated 4 out of 5 stars
Review by

Richard B.

Posted on 03/28/2022

Verified Purchase

Size:
5" x 7", 20 oz.

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.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

John V. from Vazzy's

Posted on 01/12/2021

Verified Purchase

Size:
10" x 14", 40 oz.

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!

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Rebecca W. from Daily Grind

Posted on 07/15/2020

Size:
8" x 12", 40 oz.

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.

Rated 3 out of 5 stars
Rated 3 out of 5 stars
Review by

Hedda F. from Masa's LLC

Posted on 03/04/2020

Verified Purchase

Size:
10" x 14", 40 oz.

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.

Thank you for your feedback! We’re sorry you did not prefer this product. For recommendations, please contact our Customer Solutions team.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Tamara A.

Posted on 12/05/2019

Verified Purchase

Size:
10" x 14", 40 oz.

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.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Steve W.

Posted on 08/24/2019

Verified Purchase

Size:
8" x 12", 40 oz.

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!

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Keola from Billy Goat

Posted on 07/24/2019

Verified Purchase

Size:
8" x 12", 40 oz.

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.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Todd G. from Charles D. Hammond FOP Lodge

Posted on 07/04/2019

Verified Purchase

Size:
10" x 14", 40 oz.

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.

Rated 4 out of 5 stars
Rated 4 out of 5 stars
Review by

Loretta B.

Posted on 07/02/2019

Verified Purchase

Size:
8" x 12", 40 oz.

Haven't used them frozen yet, but it would have been nice to get some kind of instruction sheet to let me know how long to microwave them. Had to play around with timing and still not sure what the maximum heating time and temp are. They worked great in the Cater Gator but wish I would have heated them longer.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Nate E. from Downtown Donuts

Posted on 06/27/2019

Verified Purchase

Size:
10" x 14", 40 oz.

This multipurpose pack is great - it can be used to keep things either hot or cold! Stick it in the freezer to cool it down or the microwave to heat it up.

Rated 4 out of 5 stars
Rated 4 out of 5 stars
Review by

Tajuana H. from BEA's Snack Shop

Posted on 06/06/2019

Verified Purchase

Size:
10" x 14", 40 oz.

I have been using these for years they keep my cold toppings cold at my shop. Works Very well when you freeze them and uae under your cold food

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Jocelyn T. from Crazy Daisy's Sweets And Treats

Posted on 05/31/2019

Verified Purchase

Size:
10" x 14", 40 oz.

I used this in my catering containers. They were wonderful. My desserts stayed cold for hours. They were of good quality and i have no doubt will last a long time.

Rated 3 out of 5 stars
Rated 3 out of 5 stars
Review by

Erin B. from Dylan's Unique Gifts & Weddings

Posted on 05/28/2019

Verified Purchase

Size:
10" x 14", 40 oz.

Works OK. I had to go back on the website to figure out how to work since it did not come with any instructions. I think that was the downside. When I heated up to it's recommended temperature in the microwave, it did not seem to keep my food as hot as described. The jury is still out on this one.

Thank you for your feedback! We’re sorry you did not prefer this product. For recommendations, please contact our Customer Solutions team.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Vickie S.

Posted on 04/15/2019

Verified Purchase

Size:
10" x 14", 40 oz.

Perfect for the bottom of my carrier! Provides a perfect cooling base for foods that must be kept cool. I highly recommend it. Would order again.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Kim G. from The Lunch Lady

Posted on 04/01/2019

Verified Purchase

Size:
8" x 12", 40 oz.

I love these hot packs. Not only are they available in different sizes which fit our delivery bags perfectly, they keep our foods hot for the 20-30 minute drive we make to deliver our food hot to our customers!

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Rene S.

Posted on 12/19/2018

Verified Purchase

Size:
10" x 14", 40 oz.

so these microcore heavy duty thermal hot and or cold packs are actually amazing and stay cold and hot for a very long time !

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Valerie D. from Thomas Damato

Posted on 11/29/2018

Verified Purchase

Size:
8" x 12", 40 oz.

I used this in my catering bags. They were wonderful. The food stayed hot for hours. They were of good quality and i have no doubt will last a long time.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Armand K. from Armand’S Kitchen

Posted on 11/09/2018

Verified Purchase

Size:
8" x 12", 40 oz.

This is the second one I bought, even though it’s smaller that the first one I like how it’s actually thicker. I found this to hold heat a little longer than the other one.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Priscilla D.

Posted on 11/03/2018

Verified Purchase

Size:
8" x 12", 40 oz.

Was worried about condensation. But this keep everything cold during transport and I had no worries. Freeze the night before and they are ready to go.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Susan T. from Mary Turner

Posted on 09/27/2018

Verified Purchase

Size:
10" x 14", 40 oz.

The Microcore 14 x 10 hot or cold pack is a great addition for our catering needs. We haven't used it yet for heat but we have used it frozen and placed the pack in our cater gator. It kept the desserts cool for over 3 hours. Can't wait to try it heated.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Ayline B.

Posted on 09/08/2018

Size:
8" x 12", 40 oz.

This thermal hot or cold pack is worth the purchase. It definitely keeps drinks cold for a long period or even keeps your food warm for a long period of time!

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Kristeen C. from Can't Cook Need To Eat

Posted on 09/07/2018

Verified Purchase

Size:
10" x 14", 40 oz.

These thermal packs have been a lifesaver. I have a food truck and am very conscious about maintain proper temperatures which is why these were purchased. They are now a part of the daily packing process. We do use ice chest that plug in and run off batteries but especially during hot summer months these help us maintain temperatures, especially if cases have to be open and closed a lot. Am ordering more for our growing business!

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Man F.

Posted on 09/03/2018

Verified Purchase

Size:
10" x 14", 40 oz.

Great to use in cooler bag to keep the food colder for picnic. Also it’s great that this thermal pack can use for warm food and lasted quite warm and long. Will definitely buy more for my catering business.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Lizz S. from Stellafane Farm

Posted on 08/31/2018

Verified Purchase

Size:
10" x 14", 40 oz.

We have been using these inside our CaterGator and in our Insulated food delivery bag. They do a great job and stay frozen longer than I thought! Nice product and we will be ordering more soon!

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Order M. from Burke Hospice

Posted on 08/17/2018

Verified Purchase

Size:
10" x 14", 40 oz.

Love the size of this thermal pack! It is very good for holding smaller size pans and dishes that have to be transported in a food delivery bag.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Michelle S.

Posted on 08/16/2018

Verified Purchase

Size:
8" x 12", 40 oz.

These are quality ice packs that hold a freeze for hours or heat to very hot in a matter of minutes to keep foods hot.

Rated 5 out of 5 stars
Rated 5 out of 5 stars
Review by

Lisa D. from Griffins' BBQ Crew Catering, LLC

Posted on 07/26/2018

Verified Purchase

Size:
10" x 14", 40 oz.

The Microcore pack can be easily heated in your microwave or cooled in your refrigerator or freezer. They are re-usable and handy for hot and cold catering. We use it routinely to transport cold or frozen desserts to events. These are safer than gel. They are filled with non-toxic liquid. They heat or cool in the freezer evenly, and can be placed in any type of container for continued heating or cooling