Why choose this product? One set of glasses can be use as optical frame, Also can be use as sunglasses.
Frame material: Unbreakable flexible TR90 frame >>
Lens material: TAC lens with TR90 rims, pass polarized test, UV400 test >>
Ultra-light weight, one set (1 frame + 1 clip) only 20g.
Frame Size:
(One size suit for all shaped face)