The super-flexible section of the nipple has an “accordion-like” part that enables it to stretch in response to the peristaltic movement of baby's tongue.
Super Soft Silicone The surface of the nipple is very soft, yet does not collapse easily.
Made of thick, super soft silicone material, the nipple has a similar elasticity to that of a mother's actual breast.
The dome shape makes the baby's mouth open naturally, gently supports his mouth, and gently fits his lips