Keep your coffee hot and tea steaming with a Kitchen Warehouse thermos flask. Use this guide to help you choose the perfect thermos flask that will let you enjoy your favourite hot beverage wherever you are.
Vacuum Insulation
Vacuum insulation works by preventing heat transfer from the outside of the bottle to the inside by creating a vacuum in an inner wall. As there is no air in the vacuum, convection cannot occur and the temperature of the liquid remains stable.
Foam insulation
Foam insulation works by using foam to prevent convection occurring. It is difficult for air to move in foam so heat can’t transfer from outside the bottle to inside the bottle.