These contemporary round glasses feature a stylish design with layered magnesium-aluminum and stainless steel architecture, accented with onyx and gold, and a minimalist single bar construction with flexible spring hinges and advanced lens technology, representing the latest in the Strata Collection from GUNNAR Optiks; they are available with GUNNAR Amber 65 GBLF lenses or the new Clear Pro 20 GBLF lens for creatives seeking true color rendition without sacrificing protection, and key features include a round style, GUNNAR patented lens technology, G-Shield® Plus lens coating that is anti-reflective and smudge resistant, blocking harmful blue light and 100% UV, and the option for prescription lenses; specifications include a lens width of 51 mm, lens height of 42 mm, nose width of 19 mm, frame width of 134 mm, temple length of 140 mm, and a weight of 20 grams; included with your purchase are a flat-fold glasses case, microfiber pouch, microfiber cleaning cloth, and a 12-month warranty.