The SG-YDS is a pair of safety glasses with a dark smoked lens. Constructed from tough yet flexible nylon polymer, it has the design qualities to survive wherever you use it. It has tough polycarbonate lenses which have 99% UV A/B/C protection and anti-scratch/anti-fog coatings. For comfort and stability, there are rubberised inner arm and nose grips. Tough flexible polycarbonate frame 8-base curved toughened polycarbonate lenses Dark smoke lens tinting K & N anti-scratch & anti-fog lens coatings 99% UV A/B/C protection (EN172) Flexible PC & TPR co-injected side arms Side temple ventilation Adjustable rubberised non-slip nose pads Reinforced nose bridge Micro-fibre drawstring storage bag included Lens markings Lens filters: 5 (UV EN172) 2.5 (dark smoke) Optical class: 1 (high optical quality) Lens coatings: anti-scratch - K anti-fog - N Mechanical risk: low energy impact - F High speed particles at extreme temperatures - T