The Dr. Brown'S Natural Flow Options+ Anti-Colic Narrow-Neck Bottle 2-Pack (250 Ml, Blue) Offers A Reliable, Fuss-Free Bottle-Feeding Experience For Your Little One .Soft, Silicone Nipple Helps Babies To Naturally Latch On To It .Anti-Colic Vent System Reduces Spit-Up, Burping, And Gas .Offers A Flow Rate That Supports Breastfeeding .Narrow Neck Fits Most Breast Pumps .Each Bottle Holds 250 Ml/8 Oz Liquid .Bpa Free, Dishwasher (Top Rack Only) And Sterilizer Safe .Made From Polypropylene, Silicone And Santoprene .Pack Contains 2 Baby Bottles .