I have a number of other insulated bags;, most were given away as promotional items. They do work, but I wanted something that would hold more and do better. These bags with their cube shapes are ideal for loading frozen food in boxes or in bags (easier to stack) and the double zipper sliders on the top make it easier to open the flap (which is the whole top). Loading them into the back of my SUV is easy, and they don't move. In the warm climate I live in it can be difficult to keep frozen foods from defrosting while transporting them home; with these bags, I've found that even my ice cream is getting home from the warehouse store still nice and hard. For this price, a heck of a deal.Overall, these work great. I'm DoorDash-ing and while DoorDash has their own "hot bag", their hot bag needs work. Many restaurants are sending out packages in normal paper shopping bags. That's pretty much exactly the size of the DoorDash hot bags. These fold very flat and are very light weight. They have the length and width to hold the normal shopping bags although they don't have the height. A different version about 4 inches taller would be terrific but these are very good and are the best that I've found so far. Generally, the top of the store's packaging can be bent down so they fit in these, and from the hot patches, in side but not out, I'd say they have terrific insulation.Wanted to pick up two more today and thought I’d give an almost 1 yr review. Noticed price only $1 more. Was going to try cheaper version but too many bad zipper comments. These have had none.PROS: Have lasted perfectly with one full heavy use every week. Insulation in tack. Handles show no sign of wear or weakening. And I load these things. I shop and travel 30 min home. Meat stays cool. Very large capacity if to you know how to pack. Zipper less than perfect smooth but strong and works fine after 1 year. Not rigid or stiff but that helps fold flat. When full they hold shape fine.CONS: don’t really have any. So buying more for other cars.My prior cold bags have bee just that - tote bags with flat sides, which were hard to load food into. The rectangular form and straight sides of these bags make it easy to load food into, although they are big enough that if you fill them, you can make them uncomfortably heavy. The only thing that doesn't thrill me is trying to close the zippers around the front corners - that seems to take a lot of work. That said, it may become easier to work the zippers when I have more experience with the bags. This is a minor detail. I am overall very happy with this purchase, and would recommend the bags to anyone.I like that the bags fold well. I just wish they had a stiffer lining under the silver insulation.But good value. Have held up.Came in two pack. The only thing I didn't like is the smell of them. Smell seems to be fading I had them for about a week now. Kind of smell like detergent maybe it just a brand new smell? They do keep food warm, the zipper works fine, and everything else look fine. Like I said I only had for about a week I don't know how durable these bags are, but they do seem like they'll last a while.it's already falling apart where the zipper meets the side. I haven't tried traveling with food that needs to stay frozen very far, but seems to do well on short trips from the store to home. Probably won't buy again though, since it didn't last very long.I haven’t used them for long periods, but they are perfect for bravery shopping. They have a surprising amount of room inside and easily pack up. Handles are comfortable to carry with. I’ve pushed the weight to where I wasn’t sure it would hold and it was up to the task.I haven’t had them long enough to truly speak to durability, but so far so good.