Premium Waterproof Leather. LENZI® composite plate for added flexibility. Padded collar & leather tongue offers extra comfort. Extra-long heel counter provides torsional stability. Helcor® high abrasion toe guard for added wear protection. Duraflex® Welted Injection Construction. Outsole: PU/Rubber Oil and acid resistant, heat resistant to 300°C. 200g Thinsulate® insulation.