This baby bottle is perfect to use in combination with regular breastfeeding. Every bottle contains a practical powder container to store formula, fruits and snacks in different compartments, as well as a mixing net. The unique system called TwistFlow actively prevents baby colic and ensures an even flow. The bottle has a wide neck, making it easy to clean. It also has a grip-friendly design that retains heat. All plastic components are made of BPA-free polypropylene, dish washer safe, microwavable can be used in freezer, resist heat up to 100 deg. Celsius and DEHP-free.