Nuk hello kitty first choice bottle limited includes all the great features of the nuk first choice bottle range combined with colourful illustrations of the iconic hello kitty. Nuk has developed a range of the best baby bottles to make the transition from breast to bottle feeding easier. Nuk first choice bottles feature the original nuk orthodontic shaped teat with a special, super soft zone which adapts perfectly to babys palate. The teat has an extra wide lip support which simulates breast feeding as closely as possible and the improved nuk anti colic air system minimises infant colic caused by the harmful swallowing of air, this also helps prevent the teat from collapsing. Nuk first choice bottles are compatible with all first choice and first choiceteats. Clinically tested and clinically proven for combined feeding. For safety and hygiene purposes we recommend that you replace teats after 1 2 months of use or whenever they start to show signs of wear. Prior to sterilisation we recommend using the nuk baby bottle cleanser, its natural formula removes dried on milk protein, pulp and juice residues more effectively than hot soapy water alone. To sterilise bottles and teats we recommend using steam, cold water sterilisation or a nuk steam or microwave steriliser. We do not recommend dishwasher sterilisation as this can cause material damage.