Pigeon Flexible??? Peristaltic (Slim-Neck) - Nipple L

'For 9+ months babies.  Encourages baby to use natural sucking pattern. L-cut enables faster flow of milk. Upgrade to this size if baby is not satisfied with Y-cut.  Super-Stretchable - Teat section has an "accordion-like" portion that enables it to stretch in response to the peristaltic movement of the baby's tongue. 

Ultra-Soft Silicone - The nipple's surface is very soft, yet it does not collapse easily. Made from thick ultra-soft silicone material, the nipple has similar elasticity to that of a mother's actual breast. The dome-like shape makes baby's mouth open naturally, supports its mouth softly and fits its lips gently.