Smilco 25-Pack Small Insulated Shipping Bags, 8 x 11-Inch Thermal Pouches | Compact 3mm EPE thermal pouches with one-time self-seal closure for packaged hot or cold items

I love these things. I use them for my kids lunch when I want to keep things warm or cold. They were great for summer camps, whereas they could not bring a lunch box. I always keep these on hand now.

Lightweight, reusable, and do exactly what they promise. The metalized lining holds temperature well for groceries or lunch boxes, and they fold flat when not in use. Not fancy, but practical, durable, and worth it if you need reliable thermal insulation.

Edit: It works with ice packs and an insulated shopping bag. If you use it together- it works PERFECTLY! 5 stars. Leaving old edit for chemical smell. Because after a while it goes away. So just noting be aware. However it works great. Giving 3 stars for item arriving on time. I needed these urgently but couldn’t get options for delivery to arrive in 2 days except this item. The item came nicely packed. However they are very thin as in,1/8 inches and smaller than the size listed 13” by 15”. They are more likely mail envelopes. I hope it will keep food cold for packaging. Also note they have a bit of a weird chemical smell.

More expensive, but everything is now.

Great product. Very helpful. Very functional. As advertised.

Works well with packaging

Great quality

The insulation bags are flexible, reflective, with thermal insulation outside and inside, they seem to work pretty well keeping cold chocolate chips from getting soft.