Tommee Tippee Closer to Nature Glass Bottle with Slow Flow Teat feels like a natural just like mum feeding. Made of glass and always BPA-free. Perfect for your baby's smooth transition between breast and bottle. Designed to mimic the natural flex, movements and softness of a mum's breast. It has an optimum venting valve with a slow flow teat for less air intake and less discomfort for baby. It has a capacity of 150 ml. Suitable for 0 months and up. Perfect feeding bottle for your baby.