It puts together these laces just like normal laces. The simply proceeds and also the arresting works fine. In my first run I felt then but know that both shoes casual foot sitting as usual with laces. I felt as a little uncomfortable, because I like my shoes fixed zuschnüre to have a good grip. Back at home, I have the laces on optimization potential investigated back again. So I lashed a little harder between all eyelets and lace was still an eye more to get more stability on top of the instep. It then fell to me, of course, that I had the lace cut off (as recommended in the instructional video on the manufacturer's website) and I now missing a few centimeters.
Therefore my tip:
==> Do not put laces after the first cords a little longer, so you have a corresponding reserve in length. You can shorten it always, never extend.
My laces are now borderline short; but not as bad. In addition, threading took forever long in the two eyes and was very friemelig because the ends from fraying.
Today I ran then with the "second" and lacing the shoe fits better now because fixed at the bottom. Nevertheless, it is a bit unusual, because the lacing is evenly across all eyelets; You can not solid front, loose in the middle and above the instep lace again fixed precisely because the laces are now sometimes made of rubber.
Training and tightening actually works as promised quickly and without complications.
I as a "Just-runners" have decided for my part, that I (considered more it's not sober) my other two pairs of running shoes and all still coming not on this rubber grandson with holding function will convert. Not because they would not be suitable, but because they bring me simply no use for good 10 Euros extra costs. One should always bear in mind: These laces make each pair of shoes 10 euros more expensive - because I am quite Schrappsack!
My Conclusion:
For people who need to quickly switch shoes in competition or want, certainly useful. Similarly, for people who are restricted in their freedom of movement. Bad, but system does not avoid is that the laces are not reusable because the ends of the laces from fraying and a renewed threading seems hardly possible (may go if one fixes the ends with tape, one might like to try).
But for someone who only runs, but say nothing. And 10 euros for laces are already a decent price.