This bottle is very useful because it allows small to take it everywhere. I am currently using to transport in breast milk, the teat is well suited for adaptation within - bottle, and this product is adaptable to other products of the same brand (in particular draws milk which avoids transferring without judgment). I think it will serve me later to bring water because it is very comfortable to hold and capacity suits the promenade. It seems close and is easy to clean but I do not use long enough to say more about its longevity.