Thanks to its amazing engineering design, the double-wall insulation keeps cold drinks colder, and hot drinks hotter, while reducing condensation and preventing those annoying rings.
Each 15 oz. clear mug is made from high-grade polycarbonate, and features a Flag emblem placed between the insulated walls. The ultrasonic seal makes it safe for use in the microwave, freezer and dishwasher.
Each mug comes with an unconditional lifetime guarantee!