The Emulait Nipple 2-Pack can be bought as spare or replacement nipples for your Emulait Anatomy and Classic bottles.Emulait nipples simulate the form, feel and function of a real nipple. Flesh-like in both softness and texture with interior fibers that mimic milk ducts, the Emulait nipple is not stiff and rigid like other bottle nipples. The nipple stretches and elongates during bottle feeding, allowing your baby to use the natural suckling action they are born with and promoting oral development benefits that no other bottle provides.Feed your baby with ease, knowing that our baby bottles are designed to minimize the likelihood of nipple confusion or bottle preference, and support prolonged breastfeeding.The Emulait nipples must be used with the Flow Control Valve in place.Product details:Simulates the elasticity, texture, feel, shape, color, and milk flow rate of a real nippleInterior fibers mimic milk ducts and simulate the texture of a real nippleEmulait nipples must be used with the flow valves in place.Dishwasher safeBPA-free, phthalate-free, non-toxic, FDA-approved medical-grade silicone