Tommee Tippee Advanced Anti-Colic nipples are designed to be used together with Tommee Tippee Anti-Colic bottles. The sensitive nipples and unique anti-colic technology in the bottles help to combat colic while ensuring a comfortable feeding experience. 84% of moms who used our anti-colic bottles agreed they reduced their baby’s colic symptoms. * Loved by moms and babies, our award-winning**, easy latch-on, breast-like nipple feels closer to skin and mimics the natural flex and movement of a mom’s breast for a comfortable feed. 95% of moms reported that their baby accepted the soft silicone nipple 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 slow flow for 0+months, medium flow for 3+ months and fast flow for 6+ months. Advanced Anti-Colic nipples are only compatible with Advanced Anti-Colic bottles. How often should I replace the bottle nipples We recommend changing your bottle nipples every two months and you should change them immediately if they're damaged or weak. * Based on 2021 study of 524 parents who use Tommee Tippee bottles ** Made for Moms March 2020