Foil Thermal Sandwich Bags - 5 Pack - Reusable Insulated Bag - Keeps Snacks and Lunch Cool and Fresh - Easy Closure - Waterproof | Silver Color

I purchased these for a trip. I was carrying several items that needed to stay cool during summer weather. I placed all of the items that needed to be kept cool, plus a small round gel pack that met TSA restrictions, in a pint zip lock, and the zip lock fit perfectly in this cold bag. While I was traveling around locally, I could easily fold it and place it in my purse. As far as leaking, I gave it a 5, but not really sure, as I didn’t carry any liquids in them without the liquids being in a container. It would be great if these came in a smaller size, too.

My high school age kids refuse to pack a lunch bag because it’s not cool. With these super slim cooler bags they bring all their food for tha day and it stays cool even when the temps are over 100.

These are great. They won't keep food super warm or super cold, but they're very functional for sturdy reusable bags to replace you plastic single use sandwich bags. I've had them for several years. To clean, I rinse them with soapy water, and they've remained in good shape with no stains or mold. It took 2 or 3 years for the ziploc to tear apart, but I used them often and feel like I got my money's worth out of them.

MY kids stillComplained their inch was cold so I just bought the thermal containers worked way better

For about $2 per bag you get some pretty incredible insulation in a very lightweight bag.I am bringing one along for my next backpacking trip to keep my meals warm as they re-hydrate. I placed a cup of boiling water in a ziploc freezer bag, then placed it in this insulated bag and placed it in the refrigerator for 15 minutes. After 15 minutes the water was at 158 F which is pretty incredible insulation for sometime so lightweight.If you want even better results you can place this inside something like a Big Sky International Insulite Pouch. If I was packing a lunch and needed to keep something warm for a few hours, that is probably the route I would go.Each bag weighs approximately .5 ounces

Those don't hold the food warm, doesn't do the job, don't buy them and waste your money. The foil side should be inside to keep the food warm, but it's from the outside so it does nothing

We did a month long bicycle tour of Ireland where we did a lot of fishing along the way. Being on bicycles, we were very limited as to what we could carry. Getting the fish we caught back to camp was challenging.With these bags, we would fillet the fish, rinse it in the cool water, and then place it in the insulated bag. If we were going any distance we would find ice cubes, but for an hour or so they needed nothing and worked great.Also cleaned up easily and were reusable.

Expensive for what it is. I was looking for a good lightweight option to send snacks to school with an ice pack.sadly my kid told me his backpack still gets all wet. Now I’m going to buy one of the reusable insulated snack bags instead… so ultimately this was a loss. Oh well.