Bandai Uma Musume Pretty Derby POCOPOCO Special Week BUM-04A

This is an accessory that attaches to the back of a smartphone. It improves the ease of holding the smartphone and can also be used as a stand. When in use: Spin the top part of the device to automatically pop it out. When storing: Push it in while spinning the top part. It can be used with devices and cases made of sufficiently wide and flat plastic (polycarbonate) surfaces.