Dr. Martens towering 14-Eye Zip Boot is proudly offered to the vegan consumer. Recent technological advances mean the manufacturing process and materials used are acutely vegan-friendly but don't be fooled - ethical manufacture has not precluded quality, with this product replicating their standard footwear down to the very last detail, complete with a practical inside zip. 14 Eyelet Zip Boot. Black Felix Rub Off, a Vegan-friendly non-leather, synthetic material, which is soft and supple, and has a subtle two-tone finish. Inside zip. Heel loop. Goodyear-welted product. The upper and sole are heat-sealed and sewn together. Dr Martens air-cushioned sole.