These Scan indirect ventilated goggles are ideal for use with power tools, particularly angle grinders and high-powered drills. With lenses made from tough polycarbonate, these goggles will withstand medium energy, high speed impacts of up to 120m/s (270mph). The lenses are clear and UV resistant. These goggles provide excellent protection from liquid droplets or splashes, large dust particles and molten metals. They can be worn over spectacles and the soft vinyl flanges around the goggles ensure comfort and conformity to facial contour.