Feature: * Length:100cm * Diameter: 0.3cm * Material: High quality plastic buckle + Elastic rope * Scope: Sports, mountaineering, travel we have many , you can choose an appropriate personalized color according to your shoes. * Designed anti loose shoelace motion with different . Easy to Install, No cutting required,Convenient to use. Lock mechanism - slidable, spring activated made from strong plastic. Perfect athletes, runners, golfers etc. Very convenient, never have to stop to retie your laces during any sport or activity again!! Just slip your shoes on and off, no more tying and untying. Locking laces provide a better which helps improve performance and avoids the problems of nylon/cotton shoelaces. Specifications: STRETCH COMFORT: Our elastic laces conform to your foot for a custom fit. Added compression reduces pressure points to your feet feel better throughout the so you can perform your best! PERFECT FOR EVERYONE: originally designed for triathletes to decrease transition time, are a great gift for seniors suffering from arthritis or disabilities, autistic children, runners of all ages, and casual users! SIMPLE INSTALLATION: size fits all (kids AND adults), quick to install, and easy to use. Each pair is suitable for lacing pair of shoes. Easy installation instructions 100% SATISFACTION GUARANTEE: LOCK LACES are guaranteed to last the life of pair of lace tennis shoes. We know that once you try them in your shoes, you’ll never go back to traditional shoelaces Package Included: shoelace*2