Giro alpineduro mtb spd shoesthe alpineduro is a versatile option that combines the functionality of a cycling specific shoe and the comfort and versatility of a rugged mountain boot the insulated construction provides warmth and the vibram sole provides high levels of grip no matter what the weather the sole delivers the perfect amount of stiffness for power transfer with the flexibility durability and grip required for walking clipless compatibility allows you to use two bolt cleat syste