Barb, that is a great question! And I wish I had a definitive answer. It appears to be a bit heavier than my SWK heavyweight Weathered Lamont, if that tells you anything. It also seems to be heavier than the last batch of XMarks, which was 14oz. I believe? Thos are the only 2 I can compare it to that might give you an idea (although I just spent 10 minutes in my closet fondling the scrap piece in one hand while I compared it to all my other kilts with my other hand!). I suppose I could try to lay a yard on my postage scale, but that is probably only going to be a very rough approximation.