Dri-Tec Waterproof membrane, 2.2mm full grain oiled leather upper provides durable comfort, Abrasion-resistant heel & toecap protects against rough terrains, Rustproof metal hardware holds up all year round, PU footbed delivers unrivalled underfoot comfort, no matter how hard the walk, PU midsole for superb underfoot comfort, stability & durability, Rolling Gait System (RGS) midsole technology, Vibram rubber outsole delivers world renowned traction, comfort & durability