HJC RPHA 12N Helmet. Premium integrated Matrix EVO (PIM™ EVO). Optimized aerodynamic performance: reduced lift and drag for enhanced stability. Optimized rear spoiler. Aerodynamic focused shell shape. HJ-42 curved shield and ratchet reduces air drag and noise. Includes both clear and dark smoke shield. 2-Way pivot ratchet system provides improved sealing. Maximum air intake: four (4) intake and three (3) exhaust vents. Enlarged front intake for maximum defogging. Fully removable interior with all size interchangeable cheek pads. Emergency pull tab. Standards: DOT FMVSS NO.218 and ECE 22.06. Weight: 3.315 pounds / 1521 grams (approximate, based on size medium solid color). Note: The HJC RPHA 12N Carbon helmet ships with a Clear and Dark Smoke face shield, and uses the HJC HJ-42 face shield as a replacement.