When I sit on my leather chair. I get red lines and red flat bumps. I've tried wearing multiple layers of clothes and covering it and right now it's covered with thick blanket and it still causes rash on the back of my thighs and the side of my thighs. It occurs after about 1-2 hours and progressively gets worse. By the time I'm done, hours later my whole thigh is red and itching that lasts for usually two days if I stay out of the chair. I've tried cleaning it as well. I think it's bonded leather. I have two fabric chairs and they don't make me itch.