I have the same burn mark in the middle of my back as the fellow with the picture. I solve the problem by taping a thick leather glove to that spot of the suspender. I will only use leather suspenders to hold up my tool belt. Other materials I tried don't seem to work. I took the shoulder pads off of the suspenders so it doesn't restrict my overhead arm movement. They leave burn marks on my shoulders but I don't mind. This keeps the weight of my tool belt off my hips and on my shoulders. I keep my tool belt very loose so it doesn't restrict my movement and hangs freely.