the rendering looks a lil’ flat, might help to throw more shadows and a few highlights* on it to show how it contours and as long as your at some material indication would go a ways to communicate the your intention. also trails shoes tend to have a more aggressive outsole for increased traction & grip on rough terrain, and while a shoe made of mesh may be breathable, it probably would not provide much in the way of protection or be very durable for its intended use. also check out this thread some better advice: Nike Trail Concept
to illustrate, hope you do not mind me hack job i did on your design…
*i over did it a bit but i hope you see what i am getting at
peaceout!