Class 1 Level FR - CSA Z96-15 Hazard/Risk Category (HRC) 2 Arc Thermal Protective Value (ATPV) 12.5 cal/cm2 CAN/CGSB 155.20-2000 (Canadian FR standard, workwear protection against flash fire) Thermal Protective Performance (TPP) value: with spacer 11, contact test 8.2 ASTM F1506-10a (Performance spec for textiles used in clothing exposed to electrical arc and thermal hazards) NFPA 70E (Standard for electrical safety in workplace) 100% 10 oz. Pre-shrunk Cotton, FR treated, twill weave 100% Polyester FR thread Heavy duty # 5 FR brass zipper on aramid tape 2" FR retroreflective tape in CSA configuration Double needle stitching on reflective tape Bar-tacked at all stress points All metal thermally protected from the skin Protective shirt collar Storm guard over front zipper with snap closure Action back for mobility and elasticized waist sides Adjustable wrists and ankles 1 flap chest patch pocket on right, with YKK snap closure 2 waist patch pockets with side access 2 rear hip patch pockets Tool pocket on right leg