It's lightweight stuff to be sure. 30 denier parachute cloth impregnated with silicone. It's super slippery and that must help prevent snags. I've never had a problem with mine though around here if the bush is that thick, you won't get a ton of rain hit the ground anyhow. I Nikwax most of my gear so it really needs to pour before I'll put this on as a poncho.