while visting relatives in syracuse on a return from a business trip to Troy, I stopped at a walmart and found a rip-stop waterproof $1/yard material in dark green - bought all 12 yards of it. My best guess is that it is a 1.1oz polyester because it is silky. It holds water like the non-ripstop material I used to make a weather shield and pack cover/gear hammock. I'm going to use this to make a 12 x 12 tarp. Well...I'm going to pay someone to make a 12 x 12 tarp out of it so i need some plans I can give to a seamstress.