The Boa Lacing System provides a dramatic improvement over shoelaces for almost any kind of performance footwear. The replaceable Steel shoe lace was developed especially for the Boa System and tested with thousands of hours of in field use. It is made of 19 individual super high strength strands of aircraft grade stainless steel. These strands are braided together to form a long lasting, abrasion resistant, super strong lace. These strands are then wrapped in a specially formulated engineering polymer coating to provide a smooth durable and friction free surface.