The Unique Anti-colic Valve Technology Avoids Airflow Into The Baby’s Tummy, Thereby Minimizing Air Ingestion And Reducing Colic, Gas, And Discomfort. Furthermore, The Ergonomic Bottle Is Easy To Grip At Any Angle. In This Way, It Offers Maximum Comfort During Feeding, For Both The Baby And The Parents. Equally Important, This Bottle Is Easy To Clean And Assemble, Ensuring That Every Feed Is As Hygienic As Possible.