Specifications Advanced ThermoPoly Shell Removable/Washable 3M Scotchguard moisture-wicking liner Dual-layer EPS and chin bar Ram Air Ventilation system. Quick-snap removable chin vent EZ-removable visor Neck brace contour Enlarged eyeport Adjustable peak EZ-fit for eyeglasses Winter breath guard available Dual Homologation D.O.T and ECE-22.05.