I'm very curious about this, too. We have an easy walk harness and a step in harness and both rub our dog's tummy raw with any activity. The easy walk rubs under her armpits, too. I cannot seem to find a harness that is suitable to control a strong, muscular 65 lb pitbull but that is also lined in a soft material that won't rub her raw. I was thinking of trying this harness I found on Amazon, but I'm not convinced it still isn't going to chafe.