I received this iArrow Sports Armband for the iPhone 5 as a promotional item from Tomoson.

This armband fits pretty good, and it's not too bulky. I still don't feel as protected without my actual case on my phone with this.

The phone slides in at the top, so it doesn't slide out while working out or running.

All the buttons are accessible with this armband and case. It's pretty comfy too.