I just went with Naugahyde becasuse I'm sitting here in the scenic Naugatuck River Valley, from whence Uniroyal Chemical unleashed their magic vinyl-coated fabric on the world - that, and a lot of waste into the river... (Naugahyde also comes in a highly specular wet-look version.) And I might be surprized to see a metal zipper on that - I'd probably expect a nylon spiral affair. Really nice work!