Bin Fan of Avent and initially had the original anti-colic teats. But that was from my daughter (at the time 6 weeks old) very depressed and had to be released again and again, so that it came in the form again. With the switch to the natural suction, the problem had done! They preserve the shape and the air can escape through small side channels. My daughter has been drinking for 4 months (from the 6th week) parallel to the chest and this bottle nipples! Then she had the breast too strenuous for the meager income - you are not so stupid! ;) Now she is 20 months old and drinking at night still a vial. Now we take 3-hole sucker (who comes out enough!), But until the 7th month of the 1-hole sucker (PRE-milk) was completely enough. After 2-hole until she was 1 year old, then 3- hole.
