Since my son loves carbonated-containing water, I opted for this iso-Bottle. At first it ran out while drinking always so that he has always drunk in the puase überm sink. Unfortunately, things did but also at tea. Then I was informed by Alfi Customer Service: we had the closure always turned to the end. but this is the cleaning mode. One can dannden white part, the mouthpiece settle for better cleaning. But to drink one can make only a "half" rotation. You notice a small resistance. After I informed my son about it, is all good! Tea is only lukewarm filled because other reviews confirmed a good insulation. Color does not flake, but it is once fallen and has gotten a small scratch. But no big dent. Are satisfied !!