Columbia Men's Peakfreak Venture MID Waterproof Omni-Heat Hiking Boot 100% Waterproof Mesh/ Leather Upper Imported Rubber sole Omni-Grip non-marking traction rubber. Techlite lightweight midsole for long lasting comfort, superior cushioning, and high energy return. Waterproof mesh/leather upper combination. Critical insulation. Omni-Heat reflective liner. Omni-Tech waterproof breathable seam-sealed membrane bootie construction.