Our black Felix Rub Off is a high-shine, high-shine synthetic material with a premium feel and a subtle, two-tone finish. But the unisex shoe is still a Doc through and through, with grooved sides, yellow stitching and our iconic air-cushioned sole, thats oil-and-fat resistant with good abrasion and slip resistance. Best of all, the shoes sole is secured using one of the finest methods of construction: the Goodyear Welt.Specifications:Construction:- This is a Goodyear-welted product. The upper and sole are heat-sealed and sewn together, not merely glued like many footwear constructions.Material:- Vegan-friendly. A non-leather, synthetic material, which is soft and supple, and has a subtle two-tone finish.