Fits well, even for someone with Skinwalker proportions.
I'm an above average size of Normal Human (6'6") and this shirt at L fits perfectly. I previously inquired to their customer service representative about whether it would fit my upper Human torso, and they told me not to worry about it and that it would fit me well.
Size aside, this shirt is pretty slick. It works well in pretty much every situation.
I would very much recommend this product.
Rated 0 on a scale of minus 2 to 2, where minus 2 is Run Small, 0 is True to Size and 2 is Runs Big
Rated 5 out of 5