All coated nylon sags, and PU coated fabric sags worse than silnylon in my experience. BK is right about polyester. The lightest currently available waterproof fabric is Cuben, variously 3 or 4 oz. I like Spinniker better, but as he notes, it is hard to find right now. The Rainshed has it for $17/yard.


Edited by Spock (09/02/08 06:46 PM)