ActiveFlow Venting Technology - Patented, Leak-Free Vent SystemBPA Free Bottle Cover IncludedClinically Designed to Reduce Colic and GasHassle Free - Fewer Parts to Clean and MaintainLets Baby Control Milk Flow for an Experience Closer to BreastfeedingNatural Feeding That's Naturally SafePremium Material - Ideal for Boiling & Steam SterilizationThe Ideal Bottle System for Both Breastfeeding and Formula Feeding 73403SKU 12914466209