Inside, this boot features layers of comfort with a J-Flex Flexible Comfort System® insole, the Justin Stabilization Technology®, Ortholite® Comfort Foam insole, and a Dri-Lex® cover. Its multi-density rubber and EVA combination outsole offers lightweight durability. This boot also provides an Achilles Relief System® that eliminates weak spots in foot comfort by using stretchable material, high-density foam, and moisture-wicking anti-microbial lining to provide flexibility, support and breathability the Hybred® Orthotic insole provides all-day comfort. This boot meets ASTM F2413, EH safety footwear standards.