I just picked up 2 batches (at 50% off) of 6yds ripstop nylon from Joann's Fabrics and it is different from the ripstop that i ordered a while ago from Outdoor Wilderness Fabrics. One side is shiny I think this is coating and the other side isnt. I did the blow test and cant blow threw it. To me it doesnt really matter but i was planning on making another hammock with some of it and if its coated i will scrap that for some other ideas.