Discover the Closer to Nature breast-like nipple for a natural and smooth transition from breast feeding to bottle. Closer to Nature nipples fit all Closer to Nature baby bottles and come in a range of flow rates to keep up with your growing baby. hether your little one takes their bottle slowly or gulps it down quickly, there’s a nipple that’s right for them. With Closer to Nature baby bottle, switching between breast and bottle feeding has never been simpler. In fact, with guaranteed acceptance and built-in anti-colic valve, it could just be the best thing for baby. Made of super soft silicone, the nipple also feels closer to skin for complete comfort at feeding time. Together with the bottle’s sensitive valve, the wide bottle neck encourages your baby’s intuitive feeding action. Designed to be held in the most natural position during feeding, the compact shape of the bottle also allows baby to be closer to you. Super safe Award-winning design BPA-free, with a soft silicone nipple and built-in valve.