OK. FIrst, I thought these were lovely to look at right out of the box. In the short time mine were unexploded, they did not leak. I did find the drinking cap a little awkward - because the bottle cannot flex, air must be let in during a sip (or you'd create a vacuum and end up with your lips stuck in the cap). I was not fond of the sensation..a little like showering under a low-flo showerhead. Another issue with the non-flex factor? When my wife asked if she could put them in the freezer for a few minutes to cool the water, I absent mindedly said, "Sure, honey" - I mean, I was so proud of this fabulous new purchase. When I came home that night, I was reminded of a physics lesson: water expands when frozen. These babies split right down the side. So, perhaps not the best bottle for a moron (and, frankly, they should have put a reminder ON the bottle or in the box).