1. TR90 steel legs: light in texture and not easy to deform, making it more comfortable to wear; Low friction coefficient, strong toughness and good elasticity; With memory function, crash-proof, wear for a long time. 2. Simple eyebrow frame modeling: The simple metal lines are fused with the bold eyebrow frame design to outline the delicate outline of the face and highlight the male's competent charm. Movable nose rest: selected high-quality nose rest, skin-friendly and non-allergic; Movable nasal support structure, wear not tired.