It is constructed of hi-vis lime, 5.8-ounce, Glenguard Modacrylic/Aramid mesh fabric.
Modacrylic Safety Vest, COR-BRITE, Type R, Class 3, FR, 4XL Modacrylic fabrics are inherently flame resistant. Safety vests made with modacrylic fabric offer high visibility and protection against arc flash It features FR hook & loop closure, heat-applied reflective tape, D-ring access, and pockets.