This case is made of Premium PC + Environmental-friendly materials + Magnetic Metal Ring. Normally the magnetic ring case attached firmly on the case and when needed, it can be turned into two different angles and serves as a kickstand. The special texture design on the back enables this case a sweat-proof, anti-skid feature. It also provides comfortable grip feelings. Moreover, the metal ring allows the device to be attached to a magnetic car mount (not included) conveniently. In general, this is a practical, innovative case that is suitable for everyday-use.