Rooted in surf and skate culture, we went double-barrel with frame materials to create Twoface(TM), a rare look that pairs lightweight yet durable O Matter(TM) with lower rims of aluminum. Clean lines keep the look original, and with High Definition Optics(R) (HDO(R)), unbeatable clarity and proven protection go along for the ride. Features: - O Matter(TM) frame construction - High Definition Optics(R) (HDO(R)) technologies meet or exceed the testing standards of the American National Standards Institute for optical clarity, visual fidelity, and impact resistance. - 100% UV protection - Only available to ship within the USA