Viking Footwear Harvik by Viking Firefighter Waterproof FR Boot 100% Natural Rubber Importado Flame retardant rubber upper with polyaramide lining. Highly chemical-resistant rubber upper. Abrasion-, oil-, chemical-, heat-, and slip-resistant chloroprene rubber NJV sole Extra comfort non-woven para/meta aramid FR lining with excellent flame resistant properties. Reinforced backstay for heel/tendon protection. Steel mid sole for footstep protection against penetration Safety reflective patch on the side and back of the boot. Ankle padding protection and foam midleg padding for additional support Heavy-duty pull straps. Ultra flexible: Exceeds 305,000 Flex Rating Ideal for Regular and Auxillary Firefighters, Forest fire workers, General fire rescue