MephistoObizzo,Top grain leather uppers, double stitched andre-enforced at stress points. Calf-skin liners keep moisture and heatdown. Removable insoles, perforated to allow air circulation all aroundthe foot. Soft-Air Technology mid-soles provide light airy cushioningto every step, relieving impact on the knees, hips and lower back.Super compression outersoles provide maximum shock absorption for themost ambitious walker. The natural rubber outersoles are long lastingand naturally slip resistant. * The top quality natural materialschosen for our footwear, are ultimately the secret to our comfort.