Optrel® WeldcapThe Optrel Weldcap offers the protection of an auto darkening welding helmet with a lightweight, flame retardant baseball cap. The Weldcap lens has a single, wide angle sensor, operable in variable shades 9 to 12 or shade 3 grind mode. The nose cutout design provides a field of vision up to 270% greater than a standard 2 1 2 x 4 1 4 inch welding lens. Manufacturers two year warranty on the auto dark lens assembly.