The important thing to know is that this is the right size and product type to replace the heat pad for casserole packs that can keep food hot or cold

but that's a good thing!

In addition, it did not keep things warm as long as advertized.

For around 11 bucks, it does a great job of keeping things warm!

Keeps things hot

Have only used it once since purchased, but it did what it was supposed to do, keep thing warm/hot!

These things are great!

Fits my Pyrex 9x13 carrier and keeps things hot for potlucks or get togethers at others homes.

This thing is amazing

keeps thing hot for along time

These things eventually die, no matter how careful you are heating them up!

Can't say enough good things about it.

They keep hot things hot.

It keeps things warm for longer than I imagined.

fits well and keeps things hot

Wrks well and keeps things warm as expected.

Great product, keeps things hot for quite a while

Always have kept things hot before

I like to take things hot to where I am taking them

This thing is amazing in how long it keeps food hot

They are the perfect size for carrying casseroles or putting in food delivery bags to keep things warm.

We seriously love this thing

I typically use them for keeping things warm, so I cannot speak to the freezing capability

By the way, even though it's listed as being used for keeping things warm by microwaving it, l learned early on you can keep things cold by freezing it

The casserole carrier has been a handy thing to have over the years.

this thing is awesome, microwave

This pack is thicker than I expected, but it seems very sturdy and keeps things HOT.

By the way, even though it's listed as being used for keeping things warm by microwaving it, l learned early on you can keep things cold by freezing it

This hot pack did and excellent job at keeping things warm.

I love these things

n’t work well for cold anyhow).