DESC: Save yourself a step! This convenient Avent Conversion Kit allows you to pump breast milk directly into Avent bottles--eliminating the need for an additional container. That saves you time, reduces clean up, and minimizes risk of contamination. And these award-winning Avent bottles may be used for freezing and heating breast milk as well as feeding baby. Bottles are dishwasher safe, may be sterilized, and are clearly marked in ounces and milliliters for accurate measuring. Our Conversion Kit includes: ? Pump adaptor (works with most breast pump models, including Medela) Two 4 oz. Avent bottles/storage containers 2 newborn nipples 2 sets of disposable nursing pads.