With Closer to Nature Bottles, switching between breast and bottle feeding becomes easier than ever before. Designed with a unique, easy-latch-on teat shape 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. * Unique, easy-latch-on teat shape. * Super-sensitive valve. * Soft, natural-feel silicone teat. * Easy-hold bottle with slow-flow teat. * BPA-free.