Norma in black is a model with both round and square shapes that comes together in characteristic model.
Solid Black / Solid sort lens
Lens 49.5 mm
Bridge 20.5 mm
width 138 mm
Temple length 140 mm
100% handmade Italian Mazzucchelli acetate.
Carl Zeiss CR-39 scratch-free lenses, providing 100% UVA/UVB protection.
Stainless steel, nickel-free OBE hinges w/ silicone safety screws