angled tortoiseshell-detail square glasses Black/grey angled tortoiseshell-detail square glasses from MATSUDA featuring acetate, two-tone design, tortoiseshell effect, square frame, nose pads, straight arms and straight tips. All glasses from FARFETCH are sold as non-prescription frames.. These glasses come with a protective case.. Imported Composition Acetate 100% SIZE & FIT Measurement Arm Length 5.7 in(14.5 cm) Bridge Width 0.8 in(2 cm) Lens Diameter 1.9 in(5 cm) Total Width 5.5 in(14 cm)