The Ratio features a shallow, rectangular frame shape with a 90s sensibility. Marked by a flat frame design, flat lenses and minimal laser-etched branding at the temple, the result is a contemporary take on an iconic eyewear style. German-engineered three-barrel hinges. 100% recycled stainless steel construction. 'Green Nylon' lenses. Branded recycled PU case and polishing cloth pouch included. Stainless steel option features mirrored lenses. Eye Width: 53mm Bridge Width: 19mm Temple/Arm Length: 140mm