Nuk first choice baby bottles are clinically proven for optimal combination of breast and bottle feeding the bottles feature the original nuk orthodontic asymmetrical shaped teat designed with a special super soft zone which adapts perfectly to babys palate simulating breastfeeding as closely as possible so true to nature that most babies hardly notice the difference the teat has an extra wide lip support and the improved nuk anti colic air system minimises infant colic caused by the