A PopSocket is a plastic circle that is sticky-adhered to the back of a flat phone (or case). The PopSocket expands like a tiny accordion when you pull or "pop" it out twice. This permits you to insert your fingers between your phone and completion of the PopSocket for a more comfy and safe and secure hold.PopSockets are divided into two parts: the base (the sticky disc) and the PopTop (the design portion). While the PopTop section is easy to remove after you've had enough of it, eliminating the structure is a little more difficult.