GORE-TEX® waterproof membrane, exceptional breathability and waterproof performance. Synthetic leather and mesh upper, protective toe cap. Breathable mesh lining. Kinetic Fit™ BASE removable contoured insole for flexible support. Molded nylon arch shank. Merrell Air Cushion in the heel absorbs shock and adds stability. Lightweight EVA foam midsole. Merrell sticky rubber outsole tunes each outsole with durable traction that grips when and where you need it.