Evenflo Nipples, Silicone, Medium Flow 2, 3-6M - 4 Each , $3.49
Reduces gas. Without BPA. Breastfeeding best for baby. Soft and flexible, CustomFlow nipples sense baby's pressure and respond with the right amount of liquid. Micro Air Vents help to prevent or reduce nipple collapse and minimize air ingestion. Works with all Evenflo standard size bottles. Made in Mexico.