I currently just use a quart sized heavier duty zip-lock bag for my cell phone, cash, and ID. It works but I usually have to switch to a new zip-lock bag fairly frequently. The size small Seal Line electronic bag I want to try (linked to in my above post) will be no bigger and will be more permanent. I'd go for the Jimi wallet but I don't want / need a separate thing for my phone and the Seal Line bag would still hold everything together (cash, ID, and phone).
"Limits are a state of mind: break them before they break you."
--Michael Cotty