I really wanted to love this cooler. It was perfect to carry to outdoor events. When I got it, it felt substantial, sturdy. The size is great and it holds quite a bit. The idea of a backpack cooler seemed perfect when it was being hauled with a few lawn chairs. Alas, the first one I got leaked like a sieve. Not immediately, but by the time the concert I took it to was over, the bottom of it was completely soaked. Then I was faced with either wearing it and soaking my back, or carrying it, which seemed to defeat the purpose of buying it in the first place.I tried it a few more times to make sure that wasn't just groundwater. It wasn't. I returned it and got a replacement, thinking that maybe I just got a defective one (since it seemed so genuinely well-constructed). The replacement leaked the same way. I waited about 8 months to exchange that one, thinking maybe the store just got a bad batch. Nope, third one leaked too. Since all of my purchases came from an outlet store, I thought maybe their stock is just not the same. So on my last attempt I purchased one online. Alas, same result. If you want an insulated backpack and don't ever plan to put ice or water into it, this would be a great choice. However, if you plan to actually use it as a cooler (with loose ice), keep shopping is my advice.