You bought coated nylon, sounds like. I have found about 30 yards of real sil-nylon on the dollar rack before and bought the whole thing. The stuff is unmistakable once you know what it feels like. It's as light as tissue paper and practically frictionless if you rub twp layers together between your thumb and finger.

All that dollar (now $1.50) a yard fabric comes from a place here in Dallas called Golden D'Ore Fabrics. It's a huge warehouse but I've never found anything there as cheap as what Walmart sells it for.
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