Profile Design's Elastic Laces tighten and loosen quickly and easily so you can get your shoes on/off almost instantly and speed your triathlon transitions. These trick laces stay tight so your shoes will never become untied again. Maybe best, these stretch laces move with your feet so your shoes fit better, too. Included are Profile's spring-loaded Lace Locks for easily locking and releasing the laces. And these fine laces come in various colors so you'll cross the finish line in style.