Reinforced very well

Have on the advice of a friend towards this product bought since our small lot had stomachache. Since we have these bottles, it is much better. The air exits better. The size I find enjoyable and that you can unscrew all parts separately to make it easier to clean. Most such Areas are quite thin and you can not get right into it. This is super solved because one comes from both sides pure.
Priced not really more expensive than less good products. It is worthwhile.