CONSTRUCTIONLightweight In-Mold Technology. High Density EPS (Expanded Polystyrene) Two Layer PC (Polycarbonate) Shell FEATURESAdvanced Rear Retention Adjustable Fit System Heat Sealed Removable & Washable Interior Pads Pro Designer Visor SIZESS/M (54-58cm)L/XL (58-62cm)STANDARDSEN 1078