FeaturesElastic no-tie shoelaces,elastic,comfort and firm.Easy to Install ,clean,waterproof and a variety of colors to choose from. 48 inches in length and can stretch up to 72 inches120CM, fits all kids and adults.^ Advantages: Lock the shoelaces, saving time to put on and take off, and at the same time protect yourself from embarrassing situations and the danger of shoelaces falling automatically. Tie your shoelace once and never tie your shoelace again.^ Purpose: Stretch lock shoelace, very suitable for triathlon. It can also be used for Boots, sneakers, work shoe, tennis shoe, casual shoe,cloth shoes or any other shoes you own etc.^ Quality: Spring clasp shoe laces is made of elastic memory material suitable,latex and polyester yarn and Spring clasp.high elasticity, flexibility and humanized design, which will keep your feet loose and comfortable for a long time.^ SATISFACTION: 100% satisfaction guarantee,our no-tie shoe laces can last the life of one pair of lace up shoes. We know that once you try them in your shoes, youll never go back to traditional shoelaces.You will love it. ^