I run in this shirt all the time during the cooler weather (55 and below) and it is perfect. It gets washed a lot and it keeps its shape. I hang dry mine and it doesn't take long to dry. I have used the dryer on it a couple times, it will have temporary minimal shrinkage, but its only until you stretch it back or wash and hang dry it again. Its a very durable and comfortable shirt which is true to size.