Slip-Not laces; where shoes are slippers, but not really. :)~
With Slipknot's you have the perfect mix of function and swag right at your feet. Simply select the number of laces needed with the corresponding STL, then adjust in PrusaSlicer to your shoe's size (if needed) and plug them in!
I have included an easy plug version in case you find it difficult to install the regular version with your shoe. I have been using my laces and loving them since April.
---- UPDATE----
uploaded new easy laces as the previous was incorrect version
85a TPU or similar stretchiness
If you need a TPU profile you can use:
https://www.prusaprinters.org/prints/12586-ninjaflex-profile-zero-stringing-flawless-print-be
for shoe install you can use plyers to pull through loops.
The author hasn't provided the model origin yet.