Switching between breast & bottle is second nature with Closer to Nature Teats. Designed in conjunction with breastfeeding experts, the revolutionary new tommee tippee Closer to Nature teat mimics the natural flex, movement & softness of a mum's breast, to make switching between breast & bottle easier than ever before. The unique shape of the Closer to Nature teat encourages your baby's natural feeding action so that switching between breast & bottle becomes second nature. Unique, easy latch-on teat shape Super-sensitive valve Soft natural feel silicone teat Suitable from birth BPA-free