I saw this idea a wile back on thingiverse, printed them out and tried to use them but the problem they were comming undone by walking, one piece would slide out of the other, so I had to wear zip ties for a while in addition, but that was a lame idea. So I redesigned these from the ground up with magnets.
Six 8mm by 3mm magnets are under the straps holding them together. Now you can run or go about your day with a quick release mechanism for your laced shoes.
set the magnets in with glue, so they won't come out.
and be sure the magnets are flipped to correct polarity before you set them in
otherwise they will repel not attract.
Printed in PETG, PLA will do as well.
When your print settings are right tolerances should be perfect.