SMARTGRIP Bvan.G B3 Rotation Smartphone Mount Holder Ring Stand For iPhone Galaxy (Black Pearl Diamond) Luxurious accessory for my smart phone. Safety ring & portable stand/cradle. Smart Grip is ergonomically designed, providing you a comfortable grip. Special and strong adhesive pad lets you attach and detach the Smart Grip easily. Smart Grip can be turned 180 / 400 degrees. It's not a circular ring. D-shaped cut with ergonomical design strengthens the standing function. Your fingers will not hurt even if you use it for a long time. Smart Grip is for galaxy, iPhone, iPad, etc. It can also be attached on gel cases and even on leather ones. Back is made with strong/special adhesive pad. The adhesiveness remains on the pad permanently. When you wash the back with water, the adhesiveness returns. (Even after frequent attachment and detachment.) Only 15mm thick. Made with durable PC (polycarbonate) material.