---T1 Helmets run on the large side!!! ---Fiberglass Tri-Composite Shell, Front Chin Vents with Metal Mesh Intake and Exhaust Vent ---Removable Shield, Faux Suede Liner, Meet Federal Motor Vehicle Safety Standard (FMVSS) 218 ---Padded Chin Strap with D-Ring Closure, Multi-Density EPS ---Anti-Fog & Anti-Scratch Shield, Certified DOT & ECE 22.5.