Bought this cooler because it has an air tight seal. I use it for work every day. There’s a real bad problem with fruit flies in the break room at work and I was having a lot making their way into my old lunch bag and I tried a nice igloo cooler which was only worse. This one completely seals them out and keeps everything inside nice and cold. Two downfalls are that the zipper is really tight and the front and rear pockets don’t give at all. I’ve used the included lubricant in the zipper a few times and it has slowly gotten better. The front and rear pockets could do with having a bit of give. Good luck even getting your hands in there even with the zipper open. Overall, a great product and hoping I can get lots of life from it.