I had purchased a few sleeveless t-shirts for my husband.  All of them were size XL.  I ordered this in XL as well but it's way bigger and really long (but it's not advertised as being a Tall size).  I'm talking it almost hits mid thigh on my 5'08" husband.  The neck is really strange on it too.  The only reason I didn't give it just one star is because it was free to return and because I liked the weight of the fabric.