Columbia Men's Cascade Pass Waterproof Hiking Shoe 100% Nubuck Leather Upper / Textile Tongue / Collar Imported Rubber sole Nubuck leather upper with textile tongue and collar. Omni-Tech waterproof breathable seam-sealed membrane bootie construction. Combination suede leather, mesh and webbing. Solid non-marking rubber outsole. Techlite lightweight midsole for long lasting comfort, superior cushioning, and high energy return. Midsole ports for air ventilation and cooling.