Insulated Easy Zip Lock Resealable Aluminum Sandwich Bag - Reusable Thermal Lunch Snack Bento Picnic Hot & Cold Pouch (10, Large)

I bought these in hopes of keeping my food organized in my day pack when hiking and also to keep things cool. I've been eating homemade frozen yogurt for lunches and have tried this bag twice now. Both times the yogurt was still firm. Haven't tried it in really hot weather. The warmest was upper 70's but the food was in there for a lot of hours. Very happy with it. Plus it can be folded over to save space in the pack.

I have a very large hot/cold bag that works great, so I bought these to help keep warm food warm when I send it to school with my daughter. Unfortunately, these don't seem to help much at all. I've even put a glass measuring cup filled with very hot water inside the bag for a little while to try to "prime" it, but it still doesn't make much of a difference. Also, the bags are a little larger and difficult to stuff into a school-sized lunch bag. Overall, a disappointing purchase.

Product is great for school lunches or carrying cold/ warm foods to work/ school . A great addition to any lunch box.Bought this for my grandson to carry frozen tacos to school . They worked . He was able to microwave his lunch and food stayed cold until he cooked it . Zip lock works great and is reusable . Just the right size !

They are okay. They didn’t really keep the food as warm or as cold as I thought they would.

These are great they kept my food warm for a while. Unlike my thermos.***Update***Kept the food warm for a week and that was it.

Had a real simple need: Keep the yogurt I bring to work every day cold for 1 to 2 hours. That's all I needed and these bags do the trick. And glad they come in a bundle because sometimes I leave a bag at work and it's nice to have a backup.

Doesn’t really keep food warm. Maybe better for cold items?

Perfect for shipping items that are heat sensitive. I used these to ship out massage melts that usually arrive melted. These work great for me shipping from Michigan to California and product arrived in perfect condition.

These work better than just aluminum foil. We use them for our kids lunch and they do stay warm longer than foil wrap but not as long as we had hoped

One time use but its great for Ultralight hikers. I use this to cook a lot of my foods.

Super thin. I've put this in the freezer for days and its still not cold. My cold things only stay cold for an hour, maybe two.

Bought it to keep allergy antigen cold while on a long trip. Did the job! A little larger than what I expected, but still worked out great.

just what i needed to insert inside my diaper bag to keep baby yogurt cool

Works as advertised

These were bought for a group hiking a 14er looking for the lightest amount of weight. The sandwich bags appear just what they need. We plan to slip a thin ice pack in. If we wanted to add more than a sandwich, or 2 sandwiches per pack, I think that would work. The bag is very lightweight and the small would easily hold 2 sandwiches.