Ultra-comfortable and technical, Tracker provides protection from all mechanical risks and also chemical risks, making it unique in the safety glasses range.Features and Benefits• Upper protection• Removable foam reinforcement with indirect ventilation• Lower protection• Removable adjustable strap• Side ventilation• 52gProtection:Chemical protection against liquid droplets or splashes. Goggles, adapted spectacles with strap or face shield mandatory.Chemical protection against large dust particles> 5 microns. Goggles mandatoryThe filter glasses EN 169 are particularly suitable for welding and are guarantees optimal protection against bright light and ultraviolet and infrared radiation.Welding shades available:1.7 - Working with a welder3 - work braze-welding5 - Working gas cutting & welding work low energyMedium energy impact, resists a 6 mm, 0.86 g ball at 120 m/sLow energy impact, resists a 6 mm, 0.86 g ball at 45 m/sThe letter T, immediately after the mechanical strength symbol, auth