Tommee Tippee Closer to Nature Variable Flow Bottle Teats are a natural mimic the natural flex, movements and softness of a mum's breast. It is the original breast-like teat for a natural latch and smooth transition from breast to bottle. Specially designed to help reduce air bubbles in the milk and to encourage a good latch-on at the teat to help reduce the risk of baby ingesting air during feeding. Anti-Colic super sensitive valve eliminates excessive air flow, so little ones ingest more milk and less air. Perfect for your baby's smooth transition between breast and bottle. Always BPA-free. Suitable for 6 months and up. Compatible with Closer to Nature Baby Bottle only. Available in a pack of 2.