• The brown to red lid is the signature Smart Lid color offering, with a vibrant bright red color when it is in its hot state.
• Manufactured with a food grade compliant color-changing additive, when cold, the lid is a dark brown (coffee) color.
• When hot, the lid turns red to remind your customer to be careful.
• As the drink cools, the color of the lid changes back to the regular coffee color.
• Your lid is correctly fitted if there is a complete brown ring around the lid and incorrectly fitted if there is a broken ring around the lid.

• The color changing lid works in a universal language, COLOR! There are no language or interpretation barriers.