Silnylon has a "feel" about it. It's like super slick tissue paper. The edges don't fray and it doesn't have a front or back side. I've bought about 30 yards of the stuff at Walmart before but its hit or miss. DO NOT LET THE NICE FABRIC LADY PIN THE SALES TAG TO THE WATERPROOF FABRIC!!! (happened to me) It will destroy several yards of your new treasure.
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paul, texas KD5IVP