A Flow Arm Ring Spinner, often simply referred to as a "flow ring" or "arm spinner," is a kinetic toy made of a series of interconnected metal rings. These rings are flexible and can collapse into a flat, compact shape or expand into a 3D structure resembling a toroid or a sphere. When placed on the arm, the ring spinner can roll smoothly up and down, creating a mesmerizing visual effect and a soothing sensory experience. It's often used in flow arts, stress relief, or as a fun fidget toy. The spinner can also be passed from arm to arm or from one person to another, making it a playful and interactive object