ElasticSCIENTIFIC DESIGN: Aiboxin Upgraded Version No Tie Shoelaces feature a unique curved magnetic buckle and flat elastic rope design. The magnetic and snap-on double-lock design of the lock makes you never worry that your shoelace will loosen; The lace locks are curved and fitted with a flat stretch cord that blends perfectly with your feet to keep your feet comfortable all day.TIME SAVER/EASE OF USE: With no tie design, never worry about tying your shoes again during any activity. Easy to use. Putting on shoes could not be easier. Slip on/Slip off, these elastic shoe laces are quick and easy.PERFECT FOR EVERYONE: Aiboxin no tie elastic shoelaces are a great gift for seniors suffering from arthritis or other disabilities, autistic children, runners looking to speed their triathlon transition up, and a must for sports enthusiasts.SIMPLE INSTALLATION: One size fits all (kids AND adults), quick to install, easy to use. Each pair is suitable for lacing up 1 pair of shoes. Easy installation instructions provided.100% SATISFACTION GUARANTEE: As long as you are our customers, since the day you buy Aiboxin shoelaces. We will provide 24-hour uninterrupted service. We sincerely believe we will bring the customers the most satisfied buying experience. Product Description 1 pair of laces including: 1. Four screws; 2. Two shoelaces; 3. One screwdriver; 4. Two magnetic buckles. Installation Steps: Put laces on your shoesCut off excess laces (Please wear your shoes to confirm that you need to keep the length of the laces)Burn the tail of shoelace with lighterThe tail of shoelace is folded into metal buckleScrew on the screwInstallation is complete