The naturally shaped nipple has a built-in anti-vacuum skirt and one-way air valve to ensure that liquid, rather than air, flows through the nipple and reduces baby’s chances of developing gas or colic. The bottles are a snap to assemble, can be reused, and their wide necks make them easy to clean and fill.

If you use the Avent Natural Feeding System, these 9-ounce bottles are fully interchangeable, allowing you to pump, store, and feed from the same bottle. Each bottle is made of durable, polycarbonate plastic and comes with a sealing cap to prevent leaks.