C13c style is base on the N1c hot style + flip up clip on a special Version.
The frame is screws free, electric, nickel free, plating free and welding free with 6mm sustainable polymer. The weight is 40% lighter than acetate. The Rust color is painting and polishing into rust effectives by hand one by one.
44mm lens size
145mm temples length
The clip on sunglasses lens is Polarized lens with UV400 protection.
ultrasonic cleaner machine and ethanal may affect painting on the spectacle.