UPPER: Water resistant Suprellsoft. Anti-stretch lining and anti-slip rear lining. Fibertech sockliner with bending points in the forefoot. INSOLE: Nylon, synthetic and shock absorbing EVA foam. LASTING BOARD: Fibertech sock liner with flex points in the forefoot area. ONSOLE: Dual density MG 14 outsole. Axeler technology provides exceptional propulsion on the toe off and the necessary rear foot stability.