These 2 teats, compatible with the wide-neck glass feeding bottles by Beaba, have been specially designed to control airflow & thus reduce colic. These teats for glass bottles with wide necks have an ergonomic shape which make it easier for baby mouths to suckle. The slow flow is adapted to baby's suckling rhythm! PLUS POINTS OF SET OF 2 TEATS FOR GLASS FEEDING BOTTLES WITH WIDE NECK Compatible with glass feeding bottles with wide necks by Beaba Soft & supple silicone teat Designed to regulate air: makes suckling easier & reduces colic Ergonomic shape suitable for baby mouths Set of 2 slow-flow silicone teats for wide-neck glass feeding bottles by BEABA