Description Formerly Blundstone #558 Leather Lined Black The Blundstone #558 Chelsea in Black. Dual layers of leather provide comfort and added wear. Soft leather cradles feet inside. Tough, oiled leather outside has excellent long-wear characteristics. Unisex sizing. Features Premium leather Thermo-urethane outsole resistant to hydrolysis and microbial attack. Polyurethane midsole for comfort. XRD® in the heel strike zone to dissipate heel strike shock. Comfort EVA removable footbed with XRD® in the heel pad. Extra set of footbeds for fit adjustment. Leather lined. BLUNDSTONE WOMENS BLUNDSTONE CLASSIC BLACK BOOT