nothing phone case

I design this attachement in the bck of the phone case to plug different accesories. I also made: a powerband holder to charge while keep using the phone. a holding ring which have free rotation to adapt to different postures. and a simple holder ( flat back to add magnet or doble side tape) to attach the phone in the back of a car seat or next to your desk, anyplace really. This last one also have a hole to use as a keychain.