Motorcycle ATV Dirt Bike Motocross MX Off-Road ATV Adult Body Protection Leg Shin Knee Guards Pad Dual pivot hinge more closely follows the natural movement of the knee, allowing for a greater degree of comfort with unmatched coverage Asymmetrical design independently fits the left and right leg for unparalleled comfort Multiple large vents in plastic shells and foam for maximum ventilation Soft wicking mesh material for maximum comfort and ventilation against the skin Specifically designed shin piece prevents guard from slipping down leg