A seating device is provided. The seating device includes a seat, a post positioned below and attached to the seat, a base positioned below and attached to the post, an inflatable bladder positioned below and attached to the base, and a guard positioned below and attached to the base. The inflatable bladder comprises a portion of a sphere, the portion comprising less than 35 per cent of the sphere. The inflatable bladder covers over 35 per cent of an underside of the base, and the guard comprises a solid circular piece extending downward from the base with a bottom edge located above a bottom of the inflatable bladder when the inflatable bladder is fully inflated.