Only used once - too small for my big head. Aerodynamic shell design constructed using an advanced lightweight composite poly-alloy. A flush-fit, lock down, side-coverless face shield that is optically correct, compound-curved, scratch-resistant and protects against UV-rays. Quick release shield ratchet system with shield lock. 8 points of ventilation with chin, side, forehead, top and rear vent. 2 intake vents and 6 exhaust vents.