Tommee Tippee Advanced Anti-Colic bottles make switching between breast and bottle feeding simpler. The specially designed anti-colic bottles have an easy latch-on, breast-like teat that feels closer to the skin and mimics the natural flex and movement of a mum's breast. With Tommee Tippee's award-winning Advanced Anti-Colic baby bottle, switching between breast and bottle feeding has never been simpler - in fact it has been voted as mum's #1 bottle for switching between breast and bottle! With the breast-like teat and unique anti-colic technology, it could just be the best thing for baby, since you! Inspired by mum, designed by experts. This is no ordinary bottle. Tommee Tippee Advanced Anti-Colic bottles works a little differently from regular bottles to help combat colic while ensuring a comfortable feeding experience for you and your baby. The unique 3-piece anti-colic venting system draws air away from milk and the star valve keeps milk from travelling up the tube meaning less win