Impressive.  Installation video made it a snap.  I used these on a pair of New Balance hiking shoes with laces that never stayed tied.  I followed the video.  The last step took a few snaps to get it closed.

I was hesitant to buy this type, because I bought elastic shoelaces 30 years ago.  They were not sophisticated, looked clownlike at the top, and the tight elastic laces started to pressure my feet.  They looked awful.  These are nothing like those.  They look like they came with the shoe, and are comfortable.  They make a nice looking pair of shoes look even better.