ABS shell New unique shell design Dual Density EPS inner liner Removable and washable snap in interior Flotec adjustable forehead/chin ventilation Adjustable back slide vents in rear diffuser Integrated breath deflector Flat Shield with tear-off posts for racing Integrated shield lock mechanism Tool less push button quick release shield system Tool less removable side plates DOT Certified Sized: X-Small, Small, Medium, Large, and X-Large