Does the trick. No instructions on the packet but there is on the pics on tik tok Thread the lace Put the screw caps on each end Measure down where you need to screw them together Tie a knot (I had to double knot) so they don’t slip off Cut close to the not Singe the ends with a lighter

I think these are a bit long really. I’m still using them but I’ve just threaded them and done them up like normal laces. I’m not sure how well the metal caps would work because the laces are too long for me to use them.

It has made stiff trainers comfortable. The stretchy flexible uppers allows wear for longer. Adapts to feet that swells or contracts different times of the day. Adjusts without having to fiddle about. The only downside was the instructions. I got instructions from another site.

Thought they'd be a little wider but maybe that's my fault for assuming. Nice laces though. Bought for my Dr Martens.

As stated, nice