This Dr. Brown's Natural Flow Manual Breast Pump is all about comfort, convenience and safety for both you and your baby! The pulsating honeycomb liner uniquely stimulates the breast for increased milk supply. This Dr. Brown's pump is the only pump that provides a gentle, sustained level of patented one-way airflow that continuously draws air away from the breast, helping to eliminate bacteria and reducing the occurrence of breast infections. Features a vacuum adjustment dial for individualized comfort. Clinically proven to provide pain-free relief of engorgement, which allows mom to quickly and comfortably nurse her baby or pump. Contains one manual breast pump with vacuum adjustment dial, honeycomb liner, one 4 oz. wide neck baby bottle with all components, one 4 oz. standard baby bottle with all components and instructions.