The Joist 11-inch Waterproof Composite Toe work 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. The composite toe provides security and comfort and meets safety standards without weighing you down. Its multi-density rubber and EVA combination outsole offers lightweight durability and meets the standards for electrical hazard footwear so you are guaranteed protection against open circuits of up to 18,000 volts. 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 lining to provide flexibility, support and breathability.