3 Eyelet shoe. Exposed toe cap. Classic black smooth leather. Goodyear-welted, upper and sole are heat-sealed and sewn together. SDM sole, classic Dr. Martens PVC patterned sole benefits from a wooden shank for improved mid-foot ridgidity. This classic Dr. Martens PVC patterned sole is heat-sealed and benefits from a wooden shank for improved mid-foot ridgidity. It's slip-resistant with a high degree of oil and abrasion resistance and has first-class energy absorbing qualities in the heel strike area.