Viking Footwear Miner 49er Tall Waterproof Boot 100% Rubber Rubber sole Shaft measures approximately Ankle millimeters from arch Heel measures approximately 1.25" Platform measures approximately 1" Highly chemical resistant rubber upper. Oil-, chemical-, abrasion-, heat-, slip-resistant, and air cushioned NBR lug sole Achilles tendon and ankle protection Compatitble with ice studs Ultra flexible: Exceeds 305,000 Flex Rating Ideal for Open pit mining, Excavation sites, Construction sites, Forestry, Masonry, Demolition