Chicco Perfect 5 is a biofunctional baby feeding bottle that senses and adapts to the sucking rhythm of every baby offering a proven anti-colic effect. It is meant for babies starting 4M+ age group. Key Benefits & Features: • Proven Anti-Colic Effect - The back ventilated Equilibrium membrane system & the Physio teat prevent ingesting air, thus reducing irritability, regurgitation & colic. • Clinically tested Physiological sucking Rhythm - It follows your baby's unique & natural sucking rhythm to allow constant & regular feeding, with interruptions or breathlessness. • Perfect Latch - The teat adapts perfectly to the mouth of the baby & aids the natural way of sucking. Accepted by 9 out of 10 babies. Soft Sense Silicone - The soft & elastic teat with a soft sense finish gives your baby a pleasant & natural feeding. • Maximum Hygiene & easy cleaning - The unscrewable base makes cleaning the bottle easy & fast in every part.