MEASURMENTS AND WASHING INSTRUCTIONS Shirt Measurments: These are the measurements of the shirts when they are lying flat without stretching the fabric. MEASUREMENT 1 is sideways, across the chest, just under the armpit. Xtra Large = 26 inches or 66.04 cm Large = 25 inches or 63.5 cm Medium = 24 inches or 60.96 cm Small = 23 inches or 58.42 cm MEASUREMENT 2 is sideways, lower down across the stomach. Xtra Large = 25 inches or 63.5 cm Large = 24 inches or 60.96 cm Medium = 23 inches or 58.42 cm Small = 22 inches or 55.88 cm MEASUREMENT 3 is up and down, starting where the collar attaches at the top, then down to the bottom of the shirt. Xtra Large = 32 inches or 81.28 cm Large = 31 inches or 78.74 cm Medium = 30 inches or 76.2 cm Small = 29 inches or 73.66 cm Shrinkage & Machine Washing Instructions: (shirts are made from Viscose Rayon) I've found these shirts won't shrink even if you use warm/hot water as long as you hang-dry it or remove it from the dryer before it get's too dry. But if you want it to shrink, it will, only a little, if you leave it in the dryer until it's bone-dry. I also find that by hang-drying it, you really won't have to iron it. Just put it on and you'll see it hangs without looking wrinkled. Like all buttoned shirts you care about, be sure to button it all the way up before putting it in the washing machine, to help stop getting caught and and maybe ripped by the 'agitator'. Although my washer hasn't caused any rips doing it this way yet, If you wanted to machine wash it without any worries, simply put it into a "zippered mesh bag". ON TO THE SHIRTS!