iFrogz iPhone 4 / 4S Swerve Case - Lime / AquaProduct Review (submitted on December 25, 2011):
This case is a hardshell on the back with a soft poly exterior. It fits my 4S like a glove. There's a felt liner on the inside that adds a nice touch to a stylish, mostly protective, form-fitting case. The Swerve preserves the iPhone's svelte profile and offers more than decent protection for a great price.
The top [sleep] button and headphone port are exposed -- there's a clear poly ridge border that goes along the top front, but a direct drop may or may not mess up that sleep button. And the headphone port is totally open which is nice because you don't have to mess with pulling back a cover or flap to use your earbuds. But this may be a challenge in rainy conditions. I had an Original iPhone and had to replace the top button because it broke from an unprotected fall. And I had to replace the headphone port because it got wet. So if you're really careful, I'd say you'll be fine with this case. It is really nice looking and very durable.