Great as a backup or to replace worn-out parts, use the Dr. Brown's Options Wide-Neck Bottle Replacement Vent Kit to extend the life of your baby's favorite bottles. The vent grows with your baby and reduces feeding problems and helps with milk digestion.

Features:

• It is exclusively for the Wide Neck 9 oz/270 ml Dr. Brown's bottles.
• These are the same pieces that come on each Dr. Brown's bottle and are meant to replace worn or lost parts.
• Fits Dr. Brown's Wide Neck 9oz/270ml bottle.