Ice Pack Bulk-Dry Ice for Shipping Frozen Food-Lunch Box Ice Packs-3 Pounds-24+Hours-Slim 15x12in/5x3in-Reusable ice Packs-Freezer Packs-Ice Packs Shipping-Dry ice Packs for shipping-12 Pack-BPA Free

These freezer packs work great for general usage, and as long as you follow the basic instructions, you shouldn't have an issue (barring manufacturing defects). The sheet includes 12 individual "cells" that are perforated for easy separation, allowing you to customize the layout/coverage as needed, and do actually last a surprising period of time. Note that when you first hydrate these, if you place them under running water, watch them closely, as you can hydrate them to the point the cover is stretched tightly, making these more round than flat, and harder to flat pack in your container. I've only used a couple of them a few times, but so far have not had leakage issues, but they are colder than some of the other gel packs I've used (I froze these as per instructions for 24 hrs prior to using them) and did have more condensation on the non-mesh side than with other gel packs. Overall, these have been a great solution for small portable applications (I have a leather dog treat pouch I made for "high value" reward treats, and some snacks for me, I wanted to keep cold/cool), and even on longer walks in 80F+ degree temperatures under direct sunlight for 1+hrs, the contents stayed cold to the touch and fresh, something I've been having trouble achieving with non-gel ice packs.

also stay cool for extended periods of time.

Easy to use and reuse, it’s so cool that it comes in flat sheets and you just allow the water to run into them and fill to desired size. Freeze and they are ready. We left ours out at 22oC temperature to see what would happen and they lasted 7 hours, without being in any cooler and never lost a drop of moisture. Definitely will buy more in the future! Great product.

Im very happy with these little things they are easy to carry last longer than expected easy to use, handi to take with you! I like to put mine in my ice chest and wear them in a pocket vest to keep cool. And we use them in the ice chest and to ship smoked meat. Sweet little note and sticker n stuff, these are reusable,... I highly recommend.

I used the ice packs to ship from Arizona to Michigan overnight.. it worked great. The ice packs were still frozen upon receiving the package. Everything in the box was cold. Very happy with the purchase. I would definitely recommend.