Frame: laminated black walnut wood+ metal nose pad +metal rim
temples: laminated wood
lens: CR39 Non polarized gray lens
Made by more than 18 layers wood sheets, top quality wood frame products.
frames more flexibility, can assembly prescription lens directly,
frames curve more perfect to fit the prescription lens.
we did the test for the frame curve change shape or not by putting the frames in the refrigerator one night and in the boiling water more than 10 minute, the result is amazing.