Viking VW53-1 Firewall Met Guard FR Boot. Features: Meets CGSB 155.20 Hydrocarbon Flash Fire Protection; Thermal Protective Protection (TPP) TPP with the spacer 43.7 cal/cm2 & TPP without the spacer 41.4 cal/cm2 .CSA Z195-09/ ASTM F2413-11 Class #1 Steel toe and plate. CSA Omega - Electric Shock Resistant 18kV. CSA mt/75 Metatarsal Protection. NBR Rubber for maximum chemical protection. Handcrafted 100% Waterproof and Oil resistant. Quick dry polyester lining. Reinforced heel and instep. Self cleaning rubber lug sole. Fire retardant upper provides flame and thermal protection. Slip resistant Sole, resistant to 5270F hot contact. Cement, Fuel & Oil resistant. Compatible with ice studs. Available in sizes 6-13. Sold as pair.