Comfortable & Versatile. Featuring an inclinable lens & thin adjustable temples, the 3M™ 2800 Over-Spectacles are designed to fit over most prescription spectacles with minimal interference. Very lightweight for the category (38g), they are available in 2 lens options, including shade 5 for gas welding. Features Strong polycarbonate lens with anti-scratch coating for durability. Adjustable length temples (4 positions) for wearer comfort & optimal fit Inclinable lens for easy adjustment & maximum comfort Versatile design for use with a wide variety of prescription spectacles Soft low profile temples for comfort & minimum interaction with prescription spectacles