I've got a bunch of olive?ish/dark grey-green colored 0.9oz/1.0oz yard ripstop from walmart.
I read someone else say that it's definitely not downproof. I sewed up a test pillow tonight, stuffed it with some inferior quality (probably 600-650fp) down that I had laying around from a cannibalized project.
Seems down proof to me. Even quills seem to be having a hard time getting through. I've been beating it, compressing it, tearing at it, jumbling it, scratching it, etc.. Nothing other than the occasional microscopic hair or quill gets out.
Is there some superior test I should do to test this JIC? Cause it seems to work as well as the pertex quantum or momentum (albeit not as opaque and pretty) down gear I have on hand.
Am I missing something?