The iPhone 4S is so thin and fragile, I wanted to get a case that would offer some protection in case I dropped the phone.
I got a very nicely made Sena leather case:
The case is just slighter larger than the phone in all dimensions and is easier to grip than the bare iPhone. Also, the flap protects the face of the phone when the phone is not in use.
www.senacases.com
I got a very nicely made Sena leather case:

The case is just slighter larger than the phone in all dimensions and is easier to grip than the bare iPhone. Also, the flap protects the face of the phone when the phone is not in use.
www.senacases.com