Lock Laces Elastic Shoelace and Fastening System WHQ51 (13-Green) Never tie your shoe laces again! Patented locking system holds laces firm - even under extreme use. Easy to use, Stretch-fit comfort, LOCKed-in safety, water resistant, improves performance. Perfect for walking, running, marathons, triathlons, track and field events, field days, tennis, golf, outdoors, kids, seniors, and individuals with special needs. Elastic laces provide stretch-fit comfort and locked in safety Save time during transition