14 Eyelet Zip-up Boot. Zip fastening. Classic smooth leather. Heel loop. Goodyear-welted, the upper and sole are heat-sealed and sewn together. Black stitched welt. Air-cushioned sole. The original Dr. Martens air-cushioned sole, providing underfoot comfort and durability since 1960. It is oil- and fat-resistant, tough and offers good abrasion and slip resistance.