The First Choice Baby Bottle with Silicone Teat and Temperature Indicator from Nuk is a baby bottle that allows parents to check the temperature of the contents. The temperature control allows the graduation marks to be left white if the contents of the bottle are too hot. It features a silicone teat with a natural form of high acceptance by babies, ideal for babies breastfed by the mother's breast and bottle. It features a NUK Air System anti-colic system that manages the air flow for airless intake. The bottle was made of light and transparent polypropylene and has a wide nozzle that facilitates cleaning. BPA free.