Most of my tee shirts are washed most weeks--at a guess five out of six weeks. Now that I no longer hang them on hooks overnight, they really don't wear out. I

Most of my tee shirts are washed most weeks--at a guess five out of six weeks. Now that I no longer hang them on hooks overnight, they really don't wear out. I have to think that the go at least 200 wash cycles. My wife will grumble if they start to look mangy, but the last one she pitched was an REI nylon tee shirt purchased in 2002 or so, and worn probably once a week in cool (running) weather.