Add a twist to your workout and develop speed, quickness, agility and coordination. The Nike SPARQ Speed Rope ($20) is an simple and effective equipment for speed rope work to improve cardiovascular health while enhancing musle tone. The SPARQ features no-slip grip ergonomic handles, PVC-covered steel cable, heavy duty yoke connection, tangle-free steel cord and ABEC-3 ball bearing for twist-free action.