I have what is kind of rubber slipcover on mine. I wouldn't call it a "case" per se. It's got tread on it like a tire, which I thought was cool. I find a naked iPhone too slippery and this case makes it more grippy without adding a lot of bulk. It also adds some padding for when I drop it. My wife uses her phone naked, so I can always distinguish between them. Did I mention it looks like a tire?
