Today at Walmart I found what looked like ripstop nylon for $1.50 a linear yard. I bought 4.8 linear yards for like $7. It said it was an indeterminate fabric so when I got home I weighed it and it was 24oz total or 3oz per yard. I am starting to doubt if this is ripstop nylon because I can't find anything online about it weighing 3oz. Also it is satin finish on both sides so I's pretty sure it's not DWR or silnylon. Any ideas what this might be? It has the little grid pattern and looks exactly the same as the 1.9oz ripstop that i bought from DIYgearsupply.