Tommee Tippee Advanced Anti-Colic teats are designed to be used together with Tommee Tippee Anti-Colic bottles. The sensitive teats and unique anti-colic technology in the bottles help to combat colic while ensuring a comfortable feeding experience. 84% of mums who used our anti-colic bottles agreed they reduced their baby’s colic symptoms. * Loved by mums and babies, our award-winning**, 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 soft silicone teat with skin-like feel and would recommend to others. * 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 vari 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