DrinkPod Vacuum Insulated Flasks are a fun, stylish, and lightweight solution for taking your favourite hot and cold beverages on the move! These 450ml flasks are 100% leakproof – they can be stored inside a bag even horizontally without leaking – and feature a double wall construction. This creates a layer of air between the inner and outer parts of the flask, reducing heat transmission and keeping your drinks hot for up to 8 hours, or cold for up to 24 hours.