This unisex 3-eye shoe is made with all the classic doc's dna, including grooved sides and visible stitching. built to last, this boot is made using one of the finest methods of construction: the goodyear welt — which means the upper and sole are sewn together in our heat-sealed z-welt stitch. the shoe sits on our iconic airway™ sole, which is oil and fat resistant with good abrasion and slip resistance.