I just completed 318 miles over two weeks useing this pad with a single blanket between the pad and the saddle. My horse's back was not sore or tender at all. Shoes were almost gone, but his back was fine.
I've used this brand of pad for three years. I switched from a thick cotton pad to just this one. I felt a difference in my horse and it gave a great feeling of close contact with my horse... I will not go back, it is worth it's weight in gold!!!!