Military-grade impact resistance, hardcore protection for extreme environments Ballistic Grade Lenses: PC ballistic material + hyperbolic reinforced frame, certified by U.S. military MIL-PRF- 32432 ballistic test, no fear of damage from gravel/tree branch/shrapnel impacts. 127g steel ball 1.2m free fall impact test, zero cracks in the lens, impact resistance far exceeds EU CE standards. Full-band protection: UV400+ infrared blocking, snow/desert/highway glare direct vision does not hurt your eyes, anti-snow blindness, anti-sand dust, anti-glare. Lens coating anti-chemical corrosion, oil/sweat wipe clean, lasting clarity in harsh environments. Tactical level scene adaptation, seamless switching between one lens and three Magnetic quick release lens system: Ski mode: Dazzle coating lens (optional): anti-glare in bright light, snow colour enhancement, dark details are clearly visible. Light-enhancing teal lenses: Enhanced visibility in cloudy/low light conditions, safe in the shadows of the piste. Riding Mode: Transparent high transmittance lenses: clear vision at night/tunnel riding, wind and sand protection without tears. Polarised yellow lenses (optional): enhanced contrast in rainy/foggy weather, road reflection filtering, safer riding. 3 Seconds Switching: Magnetic design for one-handed operation, snow field to road/rainy day to sunny day, scene switching in one step. Tactical ergonomics for all-weather comfort. All-weather breathable and anti-fog: Ventilation holes on both sides of the frame + anti-fog film on the inner layer, -20 environment continuous breathing for 30 minutes without fogging, high-speed cycling air circulation without smothering sweat. 3D fit frame: TPU soft rubber wrapped + adjustable nose pads, adapting to high and low nose bridge, anti-wind leakage and anti-fogging. Elastic tactical headband + non-slip silicone strips, suitable for 54-64cm head circumference, wearing tactical helmets / riding helmets / ski helmets can be stacked without strangulation. Ultra-lightweight design: weighs only 180g (about 3 eggs), no burden to wear all day, easy to deal with tactical missions/extreme sports.