Because with use ithe fabric will get dirty, possibly smelly, will eventually wear and become unsightly?nice velvet gusset cover that reminds me of Froment bellows—I don't understand why this feature isn't used in all bellows.

Because with use ithe fabric will get dirty, possibly smelly, will eventually wear and become unsightly?nice velvet gusset cover that reminds me of Froment bellows—I don't understand why this feature isn't used in all bellows.