Features Lens Tech UV400 Protection CR-39 Lenses Frame Material AcetateFrame Measurements (mm) 47-18-141 Details Stainless Steep Optical Spring HingesLens Tech
UV400 Protection - Protect your eyes from harmful UV rays with these legit lenses.
CR-39 Lenses - CR-39 lens properties include high abrasion resistance and high quality optical properties. Frame Material
Acetate - Custom cellulose acetate produced specifically for Cassette. Cellulose acetate is durable yet flexible, can be produced in brilliant colors and patterns and maintains its shape and sheen with age. Frame Measurements (mm)
These measurements include the width of the lens, the width of the bridge, and the length of the arms measured in millimeters.
For example, a 56-17-144 frame:
1) Lens Width - 56mm
2) Bridge Width - 17mm
3) Arm Length - 144mm 47-18-141