Nice weight of cotton.  A little thinner than the Russell, but not much.  I'm 6'5 215, 44 chest, 17 neck.  I usually get a LT, but I bought the XLT after reading the reviews.  Length is nice, fits a little loose, not a lot. I think a LT would have been a snug fit.  The neck is fine.  It is a narrower opening than some, but not tight at all. I have washed it twice, hot, cool dry, and no noticeable shrinkage.