Designed to save space in gyms and fitness classes, the Champion Sports Double Medicine Ball Tree features a vertical design, making it easy to fit almost anywhere in your workout space. This medicine ball tree is made with steel tubing, which offers exceptional strength and stability, holding up to 10 medicine balls of various sizes and weights. Does not hold medicine balls of larger diameter. Material(s): Steel; Overall Material Type: Metal; Color(s): White; Color Family: White.