The bottle warming flask from Fisher Price is ideal for those days out and trips to the park. The flask can be used as a bottle warmer or as a helpful aide to make up fresh feeds when out and about. The stainless steel vacuum flask will hold boiled water straight from the kettle and keep it at that temperature so you will get hot water when needed. The over sleeve cup also acts as your holder for your bottle when warming it up so you never need to carry additional things in order to warm the bottle up. It has a simple one click button at the top of the flask to open up the flask for the water to come through. Once you have poured your required amount of water into the cup you can simply click the button again and this then seals the water back into the flask ready for the next use.