Natural and orthodontic shape: the special shape of the nuk nipple is based on the shape of the mother's nipple when the baby is breastfeeding. It provides the necessary space for your baby's tongue and jaw, so that natural breastfeeding movements can be made with ease. \ \ extra soft: with the new soft zone (softzone) it has, the nipple adapts to the palate even better - for a natural breastfeeding feeling \ \ prevents colic: the improved anti-colic air system allows the natural flow of food, so that your baby drinks comfortably and relaxed, without swallowing air. \ \ for milk 0 - 6 months medium medium-sized hole. \ \ \ hygienic conditions at all times – pleasant to the touch \ free of fragrances and harmful substances – without bisphenol a/s, without phthalates \ easy to fill and clean – with an extra wide mouth \ safe handle and base – bottle that narrows slightly in the middle and has a wide base \ combines with all nuk products in the first choice series \ \