With our 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 our 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 traveling up the tube meaning less wind, reflux and discomfort - 84% of mums who used our anti-colic bottles agreed they reduced their baby's colic symptoms. Plus, the anti-colic venting tube comes with a built-in heat sensing strip that gives you extra reassurance that the milk is a safe temperature for baby. Loved by mums and babies, our easy latch-on, breast-like teat feels closer to skin and mimics the natural flex and movement of a mum's breast for a comfortable feed. 95% of mums reported that their baby accepted the super soft silicone teat with skin-like feel and would recommend to others. Easy to clean and suitable for use in the dishwasher, microwave and steam sterilisers. 100% BPA-free for complete peace of mind. Which flow rate do I need? We offer different flow rates to keep up with your growing baby. Every baby is different but as a guide we suggest slow flow for 0+months, medium flow for 3+ months and fast flow for 6+ months. Advanced Anti-Colic teats are only compatible with Advanced Anti-Colic bottles. How often should I replace the bottle teats? We recommend changing your bottle teats every two months. And you should change them immediately if they're damaged or weak. Based on 2021 study of 189 parents who use Tommee Tippee bottles.