I bought this for my 8 year old son for school. No leaks so far, and as you can wash and dry thoroughly no smells left over from juice etc. It is just the right size for him and he likes the design. I was surprised however that the bottle had a fabric tab around the neck that seemed to be irremovable. I thought it was just me, but after further investigation by me husband we were sure you couldn't get it off. So it has to go in the sink, dishwasher etc with this on. It may prove to be fine and dry quickly each time. However as I've only had it a week or so I can't really vouch for it not getting mildewy etc. I would have preferred this item without this tab. I suppose I could cut it off!