Waterproof membrane seals out water and lets moisture escape Waterproof coated leather upper Protective rubber toe cap for durability and protection Fleece lining for added warmth 200 grams lightweight, low bulk insulation keeps you comfortable Kinetic Fit BASE removable contoured insole for flexible support Molded nylon arch shank Lightweight EVA foam midsole for stability and comfort Merrell sticky rubber outsole tunes each outsole with durable traction that grips when and where you need it