Make sure this fits by entering your model number. EXPLOSIVE SPEED AND AGILITY. Generate power with these agility, and plyometric training hurdles. Bring your athletic performance to the next level as you build strength and explosive speed with the SKLZ 6X Hurdles. INSTANT BOUNCE BACK. These hurdles have innovative back bounce construction, and maintain their shape, even after being used by the toughest athletes. Each hurdle offers a highly durable base with a low profile look for cleats of all sizes.