Our Comotomo Baby Bottle Bundle Includes Two 5Oz. Bottles, Two 8Oz. Bottles, And A Package Each Of Our Slow Flow, Medium Flow, And Fast Flow Replacement Nipples. Comotomo Baby Bottles Are Designed To Closely Mimic Breastfeeding To Reduce Bottle Rejection And Nipple Confusion Issues Wide-Neck Design Allows For Easy Cleaning By Hand Without A Brush. Made From 100% Safe Hygienic Silicone. Bpa, Pvc, And Phthalate Free Dual Anti-Colic Vents Prevent Unwanted Air-Intake And Reduce Colic.