We are focused on supporting the healthiest options for mothers like you and their newborns - so we have strived to create the Minbie baby's teat to assist newborns to control the feed and to practice latching properly back onto the breast (for more comfortable direct-latch breastfeeding that's better for Bub's immunity). The Minbie is not only anti-colic for your baby it is also anti-reflux and anti-mastitis. We recommend using the Minbie premium-quality teats first and only when bottle feeding your precious baby. This kit has the Extra-Slow and Slow Minbie teat sizes for newborns (premature and full-term) from birth to 2+ months. Now with our PPSU Bottle, the most resilient, ergonomic and beautiful on the market.