Take control of those delicious but tricky-to-transport lunchtime favourites, with this insulated food flask by BUILT. It boasts a smart design, with a powerful double wall of vacuum insulation. This keeps hot food warm for up to six hours, chilled food cool for up to 24 hours and frozen food stored for up to four hours. This travel mug is designed to make staying hydrated and maintaining a healthy lifestyle wherever you go even more appealing. A double walled, vacuum-insulated body is made of 18/8 stainless steel which insulated cold drinks for up to 24 hours and hot for up to 6 hours, keeping them as fresh as any "just-purchased" option.