Ideal safety glasses retainer for all electrical, fire and rescue, utility, welding, and arc flash exposed work environments. PBI/Kevlar cord will not ignite, smolder, melt, or drip when exposed to arc flash, direct flame, sparks, or welding spatter. Adjustable non-conductive PVC slider bead allows for a custom fit. Cord is heat-resistant to 540 degrees F with an arc rating of 15 cal/cm2, which meets NFPA 70E Hazard Risk Category 2.