This thing is bombproof, keeps ice cold for several days. I bought a couple of the Yeti 2lb Ice blocks....add in some 5lbs of ice and it really keeps your drinks cold for a long time. Perfect for outdoor concerts, picnics...overnighters etc. The zipper is a bit tough at first, but it breaks in and gets easier. Easy to empty the water and cleans up nice. I though about this purchase for a few weeks, because of the price- but then finally figured that this was going to last me for many many years. Get one, you won't be disappointed.