Vacuum sealed, double walled container, keep items hot or cold for an insanely long time * 500 ml bottle snugly fits a 16 ounce beverage allowing you to keep it cold for 6 hours with no temperature change * The cold lid can be placed in the freezer before use allowing the gel pack to keep your drink cold up to 6 hours * The hot lid combined with the double wall vacuum sealed bottle can keep your drinks or soup burning hot up to 6 hours * The drinking lid allows you to keep your drink hot or cold as you drink