Natural Start Anti-Colic Baby Bottle with Extra-Slow Flow Breast-Like Teat, 150mlNatural latch: Made from soft silicone, Tommee Tippee teats are shaped like a breast to encourage a natural latch and help to prevent nipple confusion when switching between breast and bottle feeding Built in anti colic valve: Tommee Tippee Natural Start teats have an anti colic valve that's proven to reduce air ingestion* Paced feeding: Each soft silicone baby bottle teat flexes and stretches like a breast to help your baby feed comfortably at their