These sophisticated square glasses feature a layered magnesium-aluminum and stainless steel architecture that enhances your everyday style, with a minimalist design, flexible spring hinges, and advanced lens technology from the Strata Collection by GUNNAR Optiks; they are available with GUNNAR Amber 65 GBLF lenses or the Clear Pro 20 GBLF lens, perfect for creatives seeking true color rendition without compromising on protection. Key features include square styling with layered architecture, flexible spring hinges, GUNNAR patented lens technology, G-Shield® Plus lens coating that is anti-reflective and smudge resistant, the ability to block harmful blue light and 100% UV, and prescription availability. Specs include lens width of 50 mm, lens height of 39 mm, nose size of 20 mm, frame width of 134 mm, temple length of 140 mm, and a lightweight design of 20 grams (without packaging). Included with your purchase are a flat-fold glasses case, microfiber pouch, microfiber cleaning cloth, and a 12-month warranty.