These versatile overglasses offer extended impact protection for improved safety for the temples and bridge of the nose. The deeper box style is a single extended polycarbonate lens, which wraps around the face to offer increased personal eye protection. Features and Benefits: Practical design that can be used over the top of prescription glasses. Lightweight polycarbonate ensures user comfort during prolonged wear. An economic choice, this product offers strength and longevity. Standards: EN166 1F. Wraparound single lens. Fits with prescription eyewear. Conforms to EN1661F.