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. Outsize: Dual density MG 14 outsole. Axeler technology provides exceptional propulsion on the toe off and the necessary rear foot stability. Material: Nylon, synthetic.