1, elastic fitness ball: a fitness ball with elastic rope. The elderly can stretch the elastic rope to exercise the muscles of hands and upper limbs, enhance flexibility and coordination, and promote blood circulation in the brain.

2. Endless fitness ball: also known as "throwing ball", it consists of two spheres, which are connected by ropes. The elderly can hold a ball in one hand and exercise the muscles of upper limbs and shoulders by shaking the rope to enhance the flexibility of joints and the coordination of the body. This fitness ball can also adjust the length of the rope.