To Be Worn Over Arc Rated Clothing Only. Not meant to be worn alone or over Non-Arc Resistant apparel.ARC Rating: PPE 1, ATPV 4.6cal/cm2Durable GlenGuard® modacrylic fabric provides long-lasting performance and inherent flame resistanceSelf-binding construction for a clean, reinforced edgeFR hook & loop closure for easy on/off with flame-resistant protection1 Internal lower pocket offers convenient storage2" retroreflective silver FR tape enhances visibilityMeets ASTM 1506Meets ANSI/ISEA 107-2020 Type R Class 3