I've seen my friend use the Ringke FUSION transparent bumper.

I gotta to say it does feel good on the hand and does provided extra protection to the phone since the TPU will be able to absorb the shock if ever you drop the phone.

Another bumper that is quite similar to the Ringke FUSION is the spigen bumper. You should be able to get this locally. i've seen a few GS sellers carry this model of bumper.