Ratchet adjustment. Two side slots (30 mm) for accessories: headphones, face shield and etc. attachment. 6 vents reduce the internal temperature and maintain the internal ventilated. 6 points suspension enhances impact performance. UV stabilizer. Shock absorption to 5 kN. Flame resistant from 5 s. Sweat-band is breathable, absorbent, reduce the impact. Crimping design enhances lateral rigidity and drains rainwater. Possibility to put logo in front of the helmet. Protection from alkali and detergents. Temperature resistant from -30℃ to +50℃.