Kodiak - Reflective Athletic Hiker (Black) - Men's: Leather/nylon upper. Reflective treatment for maximum visibility. PK chain mesh breathable, durable lining. EVA removable sock liner. TPU shank. Dual density compression molded insole with flex zone. QuadAir polyurethatne air bag with quadruple spring system. Oil/slip resistant, non marking outsole. Composite Toe; Metal free.