I've managed to tear a couple holes in my panniers. Nothing enormous; they can still hold their contents, but they definitely need patching.
What would be a good way to patch them, keeping them waterproof and hopefully durable?
They're Detours, 50% nylon and 50% polyester, just simple one-piece bags. They're several years old, and they were a gift - haven't managed to find the exact same thing online.