I know this bottle of my two nieces who are very excited about these bottles! They make a very solid impression and are extremely light (of course they are serious when they filled with liquid werden- but that goes without saying). Of course, they have now been a few small dents (if you are traveling and they fall on the pebbly soil or elsewhere happening the times) but they still work great! Through the drinking cap is also very easy to drink! Something I especially like is that this interior is not actual but simply provided with plastic with aluminum which indeed often is not the case! I can recommend them without hesitation and look forward to be able to buy for our son (he is still a bit too young)! If you have questions you can leave a comment to me like! I am glad to help!