Viking Footwear MET Guard Waterproof Boot 100% Rubber Importado Shaft measures approximately Ankle millimeters from arch SBR blended NR upper with polyester lining. Abrasion-, air cushioned, and slip-resistant 100% natural rubber lug sole. Highly chemical resistant rubber upper 14" height plus 2" nylon cuff to seal out debris, and dust Achilles tendon and ankle protection. Snug fit design to provide extra comfort and safety and reduce incidences of ankle roll-over. Ultra flexible: Exceeds 305,000 Flex Rating Compatible with ice studs. Ergonomic insoles (VF23) included Ideal for Open pit mining, Excavation sites, Construction sites, Forestry, Masonry, Demolition, High pressure power washing