- 6" Work Boot - Soft-Toe - Assembled in USA - ThinsulateÖ Ultra Insulation - Waterproof Waterproof Nubuck leather upper. 200-gram ThinsulateÖ Insulation adds warmth. Permanent direct-attach molding seals out water. Patented, long-lasting Dri-lex« lining wicks away sweat and keeps skin dry and comfortable. Removable double density footbed adds cushioning and stability. Tough, lightweight polyurethane midsole. Fiberglass shank stabilizes foot, weighs 75% less than steel and reduces fatigue. Also available in steel toe style #W03294.