Designed for compatibility with other PPE, such as industrial hats, hearing protectors and respiratory protective half mask devices. The welding spectacle is lightweight with an impact resistant anti-scratch polycarbonate lens and side shields. These features ensures a firm fit promoting enhanced product performance and user comfort. Compliance & Conformity Complies with CE, EN 166:2001. Quality System as per ISO 9001:2008. Specifications Style: Polycarbonate shade 5 IR lens with side shields and nylon adjustable temples Lens: Shade 3 or Shade 5, IR Polycarbonate anti-scratch Frame: Nylon Refractive Power: ±0.06 D Astigmatism: 0.06 D Optical class: 1 – ± 0, 06 DIOPTRES for permanent wear Lateral vision: 180 degrees Minimum Velocity particles Class: F, 45 m/s Mass: 34g Shade 5: Product Rating – EN166 F CE | IR5: 5DV1F