So do I. I was expressing this problem to a friend, (new to walking) as she was suffering from sit-mat envy, saying she would buy one at the next outdoor shop she came to. Ten minutes later we rounded a corner, and there sitting on a rock was a sit-mat, no doubt left behind by the previous walker. A posh one, with some fancy brand name stamped on it. She now has a much classier sit mat than I have!