This is an ultralight, 7 Denier, ripstop nylon. It is about 0.00125" thick and weighs only 23gsm or 0.7oz/ sq yd. (A 5x6 foot tarp or poncho would only weigh about 2.2oz.)
It is coated with silicone on one side and polyurethane on the other. The polyurethane side is tapeable or you can use Seam Grip on it if you want to seal seams or thread holes. The silicone side is the slicker side. while the PU side is a bit sticker.
The waterproof coatings on this ultralight ripstop nylon make it rated at 1500mm H2O or a bit more than 2psi, almost 5 feet of water. Break strength is 1.2 lbf in the Warp and 2.5 lbf in the Weft.
