Columbia Men's Plains Butte Waterproof Hiking Shoes Omni-Tech Waterproof Leather/Textile/Synthetic/Webbing Imported Rubber sole Techlite lightweight midsole for long lasting comfort, superior cushioning, and high energy return Omni-grip non-marking traction rubber outsole Omni-tech waterproof leather, textile, synthetic and webbing Waterproof seam-sealed membrane bootie construction