i didn't have huge expectations for this shirt, since i didn't know too much about the company.  i ordered a large, since thats what i normally would wear with other brands.  this brand sizes are a little too small, should have gone for the extra large.  im 6'2" at around 200 lbs.  shirt is short at the sleeves and at the waist.  as far as merino wool goes, it does perform as expected.  the size experience hasn't soured me with icebreaker, i will purchase more, now that i know the sizes