Customizable Fit: Equipped with a fully adjustable elastic headband, this welder’s mask ensures a snug and secure fit for all head sizes, minimizing movement and distraction during intricate welding tasks. Durable Lens Protection: The Class 1 polycarbonate lens with IR-11 offers exceptional scratch resistance thanks to its hard coating. This durable design maintains clarity and extends the lifespan of your protective eyewear under demanding conditions. High Impact Resistance: Designed to withstand high-speed impacts, the ES 004 is tested against both low and high mass impacts, ensuring robust protection against flying debris while you work confidently and safely. Certified Safety Standards: Complying with EN 166:2001, EN 175:1997, and ANSI Z 87.1-2010, this welder’s choice guarantees optimal safety and performance, meeting rigorous international standards for optical and mechanical protection.