This Super Wide Neck Bottle by Baby Works with it’s venting nipples and anti-vaccum valves allows baby to receive a steady flow of milk. This prevents your baby from swallowing too much air and reduces symptoms related to colic and feeding discomfort. 9 oz (260 ml). BPA Free. Suitable for all forms of sterilizers and are top-rack dishwasher safe. Recommended for newborns and up.