Grey Cordura Kevlar
This very good looking and smooth fabric has a Nylon lamination with fire-resistant Kevlar® on the back side. It is highly water resistant, but not waterproof. A quick spray of Scotchguard® or similar waterproofing agent will fix that right up. I've been using a bag made from this stuff for over a year now, and it looks exactly the same as the first day.
Bags made with Cordura Kevlar