Scan directly ventilated goggles that will withstand medium energy high-speed impacts up to 120m/s (270mph). Large size direct ventilation through frame. Compact lightweight construction, can be worn over spectacles. Tough polycarbonate UV resistant lens. Elasticated headstrap with soft vinyl flanges around the goggles ensure comfort and conformity to facial contour. Conforms to EN 1661B (3.4.9) standard.