"Lightweight and durable with minimal stretch, our silicone impregnated ripstop polyester fabric 1.1 oz / yd² (20D) will keep you out of the elements.  This durable tarp system with doors is both water and windproof, and resists the retention of water much better than traditional nylon tarps and tents.  
 
Reinforced with 210D Polyester, all tie outs are built with grosgrain, and come standard featuring 1/2" Beastee D-Rings on the 6 perimeter tie outs, 4 door tie outs, 4 panel pull outs, and 3/4" Beastee D-Rings on the ridgeline tie outs. 
 
We provide a free seam sealing kit, standard with each order to waterproof the tarp. The four diamond panel pull outs require seam sealing. Many find that seam sealing the ridgeline of the tarp is not necessary, but it is recommended."
 
The above wording is lifted from the Hammock Gear website where extra information and videos can be found.
 
Tarp details
Colour: Dark Olive Green (20D), Ridgeline Length: 11 feet, Is this tarp for a bridge hammock? No, Guy Out Hardware: Beastee D-Rings, Stuff Sack, Seam Sealer: Free