stableheel-positioning technology for stability on uneven terrain rubber compounds for grip, traction and durability unisex sizing water-resistant suede upper leather from leather working group–certified tanneries synthetic-leather protective rand and heel rustproof hardware for a precise fit webbing loop with daisy-chain detail at heel molded-eva footbed single-density, molded-eva midsole tpu heel cradle for added stability rubber wrap in the toe for durability and protection surface ctrl™ rubber outsole 6 mm outsole lugs