Upper and sole are sewn together, not merely glued, like many footwear constructions. Z welt-stitch and heat-sealing process, makes it unique to the Dr. Martens® 8053. Famous for its classic style, these Docs are a great look for any occasion. Goodyear welted construction. Soft leather upper for all-day comfort. Lace-up closure for an adjustable fit. Air-cushioned sole provides underfoot comfort. Slip-resistant outsole is resistant oils and fats. Black Size 10 M gently worn. some scuffs on toes and heel. see photos for condition. plenty of life left