Dr. Martens Industrial shoelaces offer exceptional strength and durability. Dr. Martens 100 cm Industrial Lace Black/Yellow are lab-tested for tensile strength, slip resistance, and stretch under load, they meet or exceed all expectations for the worker who demands strong and reliable laces for their footwear. These are slightly longer (100cm) than standard lengths to accommodate broader workboots, and fit most 4-5 eyelet boots.