This Avent Beginner Set is everything you need for your new arrival. This set is designed to reduce colic, gas and reflux in your baby. The AirFree vent is designed to help your baby swallow less air by keeping the nipple full of milk during feeding. Reducing the amount of air your baby ingests helps with common feeding issues such as colic, gas & reflux. Features: -2 baby bottles, 9 ounces -2 baby bottles, 4 ounces -4 AirFree vents -1 Pacifier -1 Formula Dispenser -1 Bottle Brush -1 My First Transition Cup -1 Soft Spout