butterfly-frame sunglasses black butterfly frame gradient lenses logo print at the arm straight arms curved tips These glasses come with a protective case. All glasses from FARFETCH are sold as non-prescription frames. Composition Acetate 100% SIZE & FIT Measurement Arm Length 5.51 in(14 cm) Bridge Width 0.7 in(1.8 cm) Lens Diameter 2.12 in(5.4 cm) Total Width 5.62 in(14.3 cm)