In situations where you need to feed your baby on the go, the bottle warmer allows you to heat milk anywhere and anytime. Boiled water stays warm in the thermo bottle for up to 6 hours, and bottles can be warmed within 2.5 minutes. With the lid designed for easy pouring, there’s no leaking while you’re out. It features clear open and closed positions and is easy to clean. The cup has a warming guide that indicates the warming times for all Philips Avent bottle sizes, depending on the temperature of the milk.