AMAZING FEATURES: Unique Design: Our shoelace lock uses stainless steel metal lock design, stylish, sturdy, but also solves the aging problem of plastic shoelaces with lock. Easily Adjustable Tension: Dial in the tightness for extra support before a run and loosen up to give your feet room to breathe after the run. Stretch-Fit Comfort: Our firm yet flexible elastic laces hug your foot for added comfort and support as your feet swell throughout the day. One size fits most (kids and adults): Don't worry about the size of laces that will fit your shoes! The laces with lock are one size fits all and fit into adult or children's shoes. Simple installation: Get up and running with the laces with lock in just 5 minutes with our easy installation instructions Waterproof: the Lockable lanyards are durable enough to stand up to the tests of everyday life. Your shoes will wear out faster than lockable laces! The timeless design of no-tie laces for kids and adults makes them perfect for: kids, your kids will be Independent without the hassle of tying your laces! Teens, slip-on laces make you stand out from the crowd! Adults, elastic laces turn your old laces into the slip-on shoes of your dreams! br > seniors, shoelaces save them a lot of time, money and hassle! people with arthritis or disabilities, with these elastic shoelaces, you will never have to tie your shoelaces again!