The proBOOT 100% polyester boot / shoelaces are available in almost any color of solid and two-tone, three-tone colors to match today's shoes or boots. The braided design results in an ultra-strong durable long-lasting shoelace that really hold up well to wear and tear. Many of these replacement laces will outlast many of the shoes! The 4mm diameter is a perfect heft for all boots or work shoes. The laces come in various lengths and colors perfect for every shoe in your closet. The Many lengths are available from the smallest child (24 inch) to the tallest snake boots (120 inches).