This stainless steel tumbler features double-wall construction to keep your beverage at its original temperature, while preventing condensation on the outside of the mug. Its slight taper design around the base allows it to comfortably fit into most vehicle cup holders, and the plastic slider top has a rubber ring around its inner lip to give it a vacuum seal to prevent spills. Printed directly onto the white mug is the Thin Red Line flag in the shape of a heart as a symbol of love and support for firefighters. Shop for this U.S.A.-made tumbler as a gift for a proud firefighter spouse, or buy one for yourself to show your firefighter love. Shop for this 20 oz. tumbler today and support firefighters.