Portwest Bizflame Work Insulated FR Bib Overall - Navy - FR422 ComplianceASTM F2413 What does “100% non-metallic upper”

What does “100% non-metallic upper” mean

Will this boot hold up on a job site with ladders

Toe Protection

The waterproof membrane keeps feet dry all day while the composite toe cap is a fraction of the weight of steel

Portwest Bizflame Work Insulated FR Bib Overall - Navy - FR422 ComplianceASTM F2413 What does “100% non-metallic upper”Portwest Bizflame Work Insulated FR Bib Overall Features: Protection against radiant, convective and contact heat Side zipper leg opening for easy access Triple stitched seams for extra durability Sew on flame resistant industrial wash tape Concealed two way front brass zipper Adjustable shoulder straps for a customised fit that reduces shoulder pressure ARC4 Shell Fabric : Bizflame Work: 99% Cotton, 1% Carbon Fiber 10oz Lining Fabric : 100% Flame