Walmart 0.9oz ripstop downproof?

[Connie]

I had a "leaker" down bag once, from Marmot.

I complained the down worked thru the fabric, so much, I had down "feathers" on the clothing I slept in.

Interesting, the Marmot employee sucked on the fabric.

I thought, that was odd. Not odd, he got some down on his mouth.

I got a full refund.

QED: not downproof.