1. TPU material, non-toxic and odorless, has excellent wear resistance, not easy ageing, bright color characteristics, more than ordinary plastic has good protective and functional.2. With the ring, you can use your phone without having to grip it tightly and protect the phone from falling off your hand.3. Easy access to all ports and buttons without removing the case.4. Receipt signal well.5. Simple and easy, comfortable, easy to carry.

http://olla.gr/for-oppo-reno4-4g-metal-ring-holder-360-degree-rotating-tpu-case-blackrose-gold/