Tommee Tippee Advanced Anti-Colic teats are designed to be used with Tommee Tippee Anti-Colic bottles. The sensitive teats and unique design help reduce air intake, preventing nipple confusion and colic symptoms. Our bottle teats are shaped to encourage a natural latch, reducing air intake and preventing nipple confusion when switching between breast and bottle. The anti-colic valve reduces air ingestion, helping to reduce the symptoms of colic. The soft silicone teat flexes and stretches like a breast, allowing your baby to feed comfortably at their own pace. Available in varying flow rates to keep up with your baby's growth. All Tommee Tippee teats are BPA free for peace of mind.