Even point of view for all sizes even though I would say that the intermediate sizes are not really useful:
- 150 ml are as good if not dallaitement dosages starting at 30 ml to 150 ideal for maternity outputs
- 260 ml can be "squizzé" directly by 340 ml (dosages starting at 60 to 260 ml)
- 340 ml dosages have also starting at 60 ml up to 340 ml (hence little interest to purchase 260 ml).
This comment only applies to baby bottles.
I commenterais teats on their own pages