Dr browns limited edition pink baby bottle is designed to bottle feed children using a level 1 teat the bottle itself is made from tough bpa free plastic and comes with a level one silicon teat that works with the venting system to allow air in to the bottle to reduce vacuums and make feeding easier it has also been clinically proven to reduce infant colic and wind the venting system has a long straw like design to prevent air being mixed with the milk or formula preventing air bubbles reducin