These lightweight optical glasses with rectangular lenses and smooth lines bring clean styling to any occasion. 57mm lens width; 18mm bridge width; 143mm temple length Fitted with nonoptical demo lenses Adjustable wire core stem Unobtainium® earsocks for nonslip grip Three-Point Fit holds lenses in precise optical alignment Durability and all-day comfort of lightweight, stress-resistant O Matter™ frame material Prescription-compatible O Matter nylon composite Imported