With Closer to Nature's award-winning range of BPA free Bottles, switching between breast and bottle feeding becomes easier than ever before. We've designed the unique, easy-latch-on teat shape with breastfeeding experts to mimic the natural flex, stretch and movement of a mum's breast. Together with the bottle's super-sensitive valve, this encourages your baby's intuitive feeding action for comfortable, relaxed feeding.Tommee Tippee