With our Closer to Nature bottle teats, switching between breast and bottle becomes second nature. Tommee Tippee's revolutionary new Easi-Vent teat from the Closer to Nature series has been developed in collaboration with style experts. It mimics the natural flexibility, softness, and movement of a mother's breast, making it easier than ever to combine breastfeeding and bottle feeding. The unique shape of the Closer to Nature teat encourages your baby's innate sucking behavior, ensuring that the transition between breast and bottle is effortless.