SAFCO Zenergy Ball Chair helps you sit comfortably, promotes proper posture, and improves core strength and balance. Ideal for offices, yoga studios, fitness centers, reception areas, or media centers, the chair features an anti-burst exercise ball that forces your body to react to a shift in position and provides relief from the stress associated with lack of movement. Bright mesh fabric upholstery adds color and fun to any work area. Stable four-leg steel base with floor glides keeps chair stationary while taking a seat. 250-lb. capacity. Includes air pump.