square-frame optical glasses square-frame optical glasses from KUBORAUM featuring brown, acetate, square frame, clear lenses, tortoiseshell effect, transparent panel detail, straight arms and curved tips. All glasses from FARFETCH are sold as non-prescription frames.. These glasses come with a protective case.. Made in Italy Composition Acetate 100% SIZE & FIT Measurement Arm Length 5.7 in(14.5 cm) Bridge Width 0.8 in(2 cm) Lens Diameter 2 in(5 cm) Total Width 5.7 in(14.5 cm)