The LOCK LACES Lock Laces are designed to convert traditional lace-up designs into convenient pull-ons with a locking device for adjustable fit. Each pair contains 2 elastic laces, 2 lock devices and 2 cord clips suitable for lacing up one pair of shoes. No-tie Lacing System: Turn any pair of lace-up tennis shoes into slip-on sneakers. Lock Laces are the original, no tie shoelaces with over 6 million pairs sold worldwide. Lock Laces are the Original Elastic No-Tie Shoelaces. Stretch Fit Comfort: Our elastic laces conform to your foot for a custom fit. Added compression reduces discomfort so you can perform your best! Lock Laces' 6-strand fibers are .22 cm in diameter, 48 inches in length and can stretch up to 72 inches. Perfect For Everyone: Lock Laces, originally designed for triathletes to decrease transition time, are a great gift for seniors suffering from arthritis or other disabilities, autistic children, runners of all ages, and casual users! Simple Installation: One size fits all (kids and adults), quick to install, and easy to use. Each pair is suitable for lacing up one pair of shoes. Easy installation instructions and videos provided. 100% Satisfaction Guarantee: Lock Laces are guaranteed to last the life of one pair of lace-up tennis shoes. We know that once you try them in your shoes, you'll never go back to traditional shoelaces. Constructed from elastic materials. Imported.