Montrail Men's Sierravada Mid Outdry Waterproof Hiking Boot 100% Textile-and-Synthetic Imported Synthetic sole Synthetic hiking boot with outdry waterproof breathable upper Mid-height hiking boot with support and protection Fluidfoam midsole for enhanced cushioning and flexibility Fluidguide technology for support and a smoother ride on trail surfaces Trailshield outsole protecting your feet against rocks and debris