Giro rumble vr mtb spd shoesgiros rumble vr mtb spd shoes are a versatile option that let you combine the functionality of a mountain bike shoe with the comfort of a light hiking shoe grippy vibram solethe vibram sole delivers the perfect amount of stiffness for power transfer yet is supple to provide the flexibility and durability that is required for walking clipless compatibility allows you to use two bolt cleat systems whilst the vibram sole provides unrivalled grip for riding with f