I bought this shirt when I was at PCT days and by the time I went to wear it I needed the medium.  I don’t know if they sell this shirt on there website or it may have only been available that day.  100 Percent merino wool shirt in men’s size small.  The pit to pit is 19″ and the back length is 26″.  I am asking $50 paypal FF which includes shipping anywhere in CONUS.  If you prefer a goods/services payment add the 2.9% plus $.30 cents fee.