Mephisto style Folmer,Top grain leather uppers,plain toe lace up, double stitched and re-enforced at stress points. Calf-skin liners keep moisture and heat down. Removable insoles, perforated to allow air circulation all around the foot. Soft-Air Technology mid-soles provide light airy cushioning to every step, relieving impact on the knees, hips and lower back. Super compression outersoles provide maximum shock absorption for the most ambitious walker. The natural rubber outersoles are long lasting and naturally slip resistant. * The top quality natural materials chosen for our footwear, are ultimately the secret to our comfort. Remember, before you toss out your old Mephisto's, you might consider having them re-built. Check out our Re-craft page for more details