Flexable filament required to fit the phone in, due to the lip.

I designed this for my uncle for his birthday. He's always playing this zombie game on is phone, and thought that it looked like hand cramp central, so I designed this for him.

There are cutouts for all the buttons and holes, except the camera, since it seemed like prime position for being uncomfortable when trying to use it, there is however a slight recess there so it doesn't touch the lens.