ingenious bottle, much better than Sigg and co, we had up to now. Sigg to the contrary of, etc., can be cleaned this bottle really good because it has a large opening. or even in the dishwasher. 2.5j our daughter has a little effort, the closing lock, but that will not last much longer, and our 5y son had no problem. the bottle is super tight, even with carbonated! I would have long wanted such a bottle, much better than we've ever had !!!
