lol, Once I get that 80 pound sub in there, the weight of the Dynamat will be the least of my worries.(it IS kinda heavy, though...maybe 3-5 pounds a roll)
Jimmy, That's a trip...I remember Ya saying that it came in 100sq/ft rolls, but mine was only like 20...maybe he had more to work with or something. It took those three rolls to do about 3/4 of the rear luggage compt.