The first choice teats replicate a mothers nipple during breastfeeding the extra soft tip easily takes on different shapes whilst also promoting the development of the mouth lips and tongue the orthodontic nuk shape combined with the nuk first choice extra wide lip support makes it easier to alternate between breast and bottle feeding the improved anti colic air system minimises infant colic caused by the harmful swallowing of air r r r r r r small feed hole for thinner liquids like br