It's unfortunate that Amazon doesn't audit the advertising on it's website.  These shirts are not 100$ cotton as advertised.  They are 75% cotton and 25% polyester.  I would also agree with the other reviewers that the "washed black heather" is not as dark as pictured.  It's more like light gray, as pictured in the packages labeled "black/grey." It's tempting to give a rating of two stars or lower because of the false advertising, but they do fit fine and are inexpensive.