I needed a bottle of Use gym. I've made my decision here because of the cool, modern design for this. Another major reason was that you can open the lock with one hand easy, according to the description. One can the true, in fact, opened with one hand, but really quick as it gets. If you ranzoomt on the closing times one sees around the metal clip at the round snap closure. Which you have to fold down to open, and the valves close again it. I use then always my second hand to help. But too bad I did not find it, go for 2 hands still easier than other bottles. It would be important even that the drinking opening no suction has like many other sports bottles. People drink more like that in the normal small plastic bottles from the supermarket. In conclusion, I find the flat still good: Looks cool, good quality and leak-proof.
