The Twistshake Anti-Colic baby bottle is perfect to use in combination with regular breastfeeding. This bottle is BPA free to ensure good health for the baby. Every bottle contains a practical container as well as a mixing net. The unique Twist Flow system actively reduces baby colic, unwanted air intake and ensures an even flow. The bottle has a wide neck, making it easy to clean and refill. It also has an ergonomically, grip-friendly design that retains heat.