Waterproof membrane - Seals out water and allows moisture to escape Premium Italian nubuck leather upper Vibram ‘Light-Trek' nonslip rubber outsole Internal waterproof ‘bootie' construction Triple-Density midsole absorbs walking impact to allow all-day comfort on longe ‘Quick-fast' middle lace hook to ensure optimum fitting, adjusts while walking 2 Zone lacing system - for optimum fitting. Removable anatomic insole. Padded one piece thermoformed collar created from new ‘neo-trek' soft-touch fabr