It is about 1/16". I would not want to pull my tarp tight enough to see if this stuff stretches. I think I read the same review on one of the backpacking test sites. The guy assumed all the stretch come from the cord and not from the tarp? I use this with the JRB tarp tensioners and have not had a problem yet. Not sure about the spectra coming out of the cover. Even new you can see spectra cord thru parts of the cover.
Last edited by hangnout; 08-26-2007 at 16:35..