As you can see, the shoe on top has almost no leather or synthetic leather. The fabric they have makes them very lightweight, but in the 13 months that I wore them, the fabric started to tear from wear and bending on the joint of the fingers. As you can see, there is no other lining inside the toe of the shoe, it is just a synthetic fabric that is thinner than denim fabric. With the slightest rain, the fabric gets wet. I used to go running once a month, but I wore them every day. With some sewing (patching) with thread and needle, they were fixed. In the end, at 18 months, they tore at the junction of the fabric and the sole, so they are for throwing away.

Excellent. Incredibly comfortable and lightweight, much better than some generic Nike shoes I had before. I don't know how long they will last, but for use at the gym and considering the price I bought them for (55€), I am very satisfied.