The Joovy Boob Baby Bottle is the most innovative baby bottle on the market today. We've hand picked the 23 essentials you'll need to get started bottle feeding. This Boob PP Gift Set includes: (3) 9oz./260ml PP Bottles with stage 2 nipples (1) 9oz./260ml Insulator (3) 5 oz./160ml PP Bottles with stage 1 nipples (1) 5oz./160ml Insulator (2) Breast Pump Adapters (3) Sealing Caps (1) Stage 1 nipple (1) Stage 2 nipple (2) Stage 3 nipples (2) Stage X nipples (2) Stage 0 nipples (1) Nipple Brush (1) Bottle Brush All items in this set are BPA and PVC free. CleanFlow Vent System provides an easy to clean, 1-piece vent ring. Air flows into the bottle through four evenly spaced openings ensuring proper venting regardless of how the bottle is held. Proper venting reduces air intake by your baby and prevents vacuum effects, reducing colic. Unique nipple shape allows you to better combine breast and bottle feeding. The large diameter base and nipple length allows baby to latch properly. We bake our nipples to strengthen the silicone, helping prevent nipple collapse while providing constant softness. The nipples are available in 5 flow rates so you can choose the perfect flow for your baby. Breast Pump Adapter is great for moms that want to pump directly into the Boob Baby Bottles, avoiding messy transfers and extra containers to clean. Compatible with Medela, Lansinoh, Playtex, Evenflo and Ameda breast pumps. Insulator is designed to keep liquids warm or cold. Parents traveling with frozen breast milk can keep milk frozen longer. It's transparent so you can see how much liquid is in the bottle. Sealing Cap allows you to store and freeze breast milk or other liquids directly in the bottle. Our Revolving Brush and Nipple Brush are ergonomically designed for fast, simple and thorough cleaning of bottles, sippy cups and nipples.JOOVY