With a 15% difference in size, the Deuce allows for a more accurate, comfortable fit. The polycarbonate frame and integral lens provide you a scratch-resistant, contemporary, wrap-around design offering a stylish look and unsurpassed protection. All Deuce lens options feature Duramass AF4 Anti-Fog coating and filter out 99.9% of UV radiation. Meets ANSI Z87+ 2003. EA