20D Sil Poly Ripstop A Polyester fabric with a siliconized coating, double ripstop. Sil Poly gives less sag, so builds stay taught when wet or under wind loading. Also known as 1.1 ounce. Waterproof to above 2000mm HH. Water beads up and shakes off. Our partners have decades of experience milling and finishing this product, and supply to makers around the world. Build in the best. Same finish on both sides of the fabric (so no “wrong” side). All light weight fabrics can present with a diagonal asymmetry from factory rolling. Maker credits TheMaineLobster rmfinn3
