Dr. Brown’s Natural Flow Original Standard Storage Travel Caps are storage travel caps for Dr Brown’s Natural Flow Original Standard baby bottles. Exclusive for Dr Brown’s Natural Flow Original Standard baby bottles For standard neck bottle Caps securely seal Dr Brown’s Natural Flow Original Standard baby bottlesfor travel and storage of formula or breast milk Top rack, dishwasher safe Product contains: 3 x Dr. Brown’s Natural Flow Original Standard Storage Travel Cap Recommended for babies 0+ months.