“Never tie your shoelaces again.” Since the design is so unique, Xtenex has been patented. Customers should be acquainted with the best way to install the laces to give top results. Put your shoes on before you position the laces. Xtenex laces come knotted at regular intervals, so stretch them to release the knotting, then begin to weave them through the eyelets. Remember that the less knots between eyelets, the tighter the athletic shoelaces will feel, so don’t pull the lace too tight at first.