NUK First Choice + Baby Bottle with Temperature Control will change the colour of the bottle dependent upon the temperature of the contents inside. If the food is too hot, the normally blue indicator will turn white. To help from feeding the contents of the bottle too hot to your baby, NUK First Choice+ baby bottles now feature the new NUK Temperature Control Indicator. It looks like a thermometer, is located within the graduation marks and the temperature of the contents of the bottle makes it change colour. If the food is too hot, the normally blue indicator will turn white. Ideally, the food for feeding should have body temperature (37C) and corresponds to the mean blue tone on the display. Key features of NUK First Choice + Baby Bottle With Temperature Control Temperature of the contents of the bottle makes it change colour: if the food is too hot, the normally blue indicator will turn white Right for the jaw, particularly soft silicone teat 150ml: 0-6 months S (small feed hole = f