Built Mindful Food Flask 490ml Insulated ContainerTake 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. So, whether it's a hearty homemade vegetable soup, or vanilla ice cream as a treat on a hot day, you'll be able to enjoy it at its