I ordered this for Halloween.  The package arrived fast, more than a week before the estimated delivery date.  I ordered a large.  It fits well in the shoulders and chest but the torso length is about four inches too long.  I've worn it with the extra material tucked underneath and also tucked in the pants and both work well.  I'm considering getting a seamstress to cut off the extra material.  The sleeves are also very open, so I may ask a seamstress to tighten those up.  In my opinion, the material quality is excellent for the price.  The shirt is very warm so worked well considering we're under a cold snap now.  It would probably be too hot during the summer.  The emblem is for science and the cuff rank is for commander, so this is a good shirt to imitate the new Spock.  The shirt has small delta symbols as part of the pattern, but I didn't find them distracting.  I wore this at work on Halloween and later when taking my daughter trick-or-treating and received many compliments.  I plan to order a blue one for my daughter and a gold one for myself.  I would give this 5 stars except for the extra length and loose cuffs.