Combat 15 inch Insulated Firefighter Boots. CSA Grade 1 steel toe/steel plate. Steel shank. Tibia protector. These boots offer the superior fitting of the Airboss-Defense Comfort Fit System. Meets or exceeds NFPA standards (1971-2000 edition). Moulded K-Lug rubber outsole for maximum grip. Electric shock resistant. Dual density Enersole which absorbs and returns energy while walking. Open cell foam insulation. Kevlar/Nomex fireproof and tear resistant leg lining.