Medela, the makers of the leading breastpumps brings you a breastmilk bottle you can trust, from the #1 choice of hospitals and mothers. Works with Medela breastpumps for pumping directly into the bottle. Embossed ounce & milliliter measurements. Safe & durable glass retains breastmilks beneficial properties. Easy to clean and recyclable. 4oz bottle ideal for feeding. Medium flow, silicone nipple. BPA – Free Safe for Baby