Extra comfort non-woven para/meta aramid FR lining excellent flame resistant property|16" tall Snug-fit design and ergonomic insole, plus the optional felt insole to adjust fit |Highly chemical resistant rubber upper|Flame retardant rubber upper |Reinforced backstay for heel tendon protection|Metatarsal, shin impact, and chainsaw protection through multiple layers of polyaramide, and rubber|Shaft is also lined with polyaramide for protection |Ankle padding protection and foam midleg padding for additional support |Viking NJV outsole – abrasion-, chemical- and slip-resistant chloroprene rubber outsole |Ultra flexible: Exceeds 305,000 Flex Rating|Safety reflective patch on the back of the boot|Heavy-duty rubber pull straps|Half sizes available