Composite Fiberglass Lightweight Shell 7-Top Air System in addition to Chin, Scalp, ExhaustVents Plush Fire-Retardant Interior Z-20 Series 3mm Shield with Tear-off Posts, 12.25 inches centre posts Removable/ Washable Comfort Liner Snell SA-2015 / FIA 8859-2015 Certified Two holes on each side on chin foam for radio/hydration Size :XS,S,M,LXL