The Castle Brooke Paralaces are laces to love. These hand-crafted bootlaces are reportedly the toughest around, and feature a seven-strand construction with 550 pound-tested Nylon Kernmantle rope, and aglets made from polyolefin plastics. Those bind and mesh with the nylon fibers to become one with the lace. These are even available in a variety of colors including the old standby in black.