FEATURES AND BENEFITSHigh manufacturing quality, material lightweight and durability Metal spring hinges help glasses adapt to face,built-in stainless steel mechanical spring is not easy to damage durableOptically correct SPECIFICATIONSize for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon   4 x Reading Glasses 4 x Eyeglass case  1 x Soft Cloth 2 x Glasses Chains 1 Set x Anti-blue Test Tool 1 x Protect CaseIf you have any problems with our items or services, please feel free to contact us We will do our best to solve any problems and provide you with the best customer servicesYour Glasses come with our 90 Day Money Back Guarantee and 1-Year Manufacturer's Warranty Thank you CARETo avoid damage, never clean your reading glasses with paper towels or clothing or alcoholand also avoid using household detergents or soaps. While a few mild soaps don't harm lenses today's extra strength soaps are powerful enough to slowly disintegrate lens coatings