The teat adapts perfectly to the baby's mouth, respecting the natural way of suction. Approved by 9 out of 10 babies. Percentage of acceptance of babies 0-2 months: 98%. Soft silicone with a Soft Sense finish on the lip support areas to give your baby a pleasant feeling. PROMOTES THE NATURAL PERISTALTIC ACTION OF BREASTFEEDINGThe SYMMETRIC, Elongated AND ENLARGED Teat simulates the mother's nipple reshaped by the baby's suction: stretched and enlarged to promote the natural peristaltic action of breastfeeding. EXTRA SOFT SILICONE – SOFT SENSEO special finishing gives the teat a velvety and soft feeling, similar to the mother's skin, for an even more natural and comfortable suction. mothers COMPATIBLE WITH PERFECT5, WELL-BEING and ORIGINAL TOUCH BOTTLES The Physio Teat can be used with the Chicco PERFECT5, WELL-BEING and ORIGINAL TOUCH bottles. When the teat is used in the Perfect5 bottle, the bottle breathes through its base thanks to its action of Equilibrium Membrane.When the teat is used in the Well-Being or Original Touch bottles, the anti-colic valve prevents the teat from collapsing and the entry of air, reducing colic and regurgitation, allowing a smooth and relaxed feeding.