Canvas uppers. Synthetic microfiber lining wicks moisture away, keeping your feet cool and dry. Roomy Thermoplastic toe box provides for comfort and toe protection. Protective Polyethylene heel counter allows the heel to move up and down when walking. PVC inner frame provides stability and reduces torque and pronation. Rope-wrapped polyurethane outsole is durable, shock absorbent, and slip resistant. Rocker bottom propels the foot forward when walking. Rubber outsoles are durable and slip resistant.