Photo 1 of USED: Gaiam Classic Balance Ball Chair – Exercise Stability Yoga Ball Premium Ergonomic Chair for Home and Office Desk with Air Pump, Exercise Guide and Satisfaction Guarantee ?22 x 22 x 31 inches

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Photo 1 of USED: Gaiam Classic Balance Ball Chair – Exercise Stability Yoga Ball Premium Ergonomic Chair for Home and Office Desk with Air Pump, Exercise Guide and Satisfaction Guarantee ?22 x 22 x 31 inches Photo 2 of USED: Gaiam Classic Balance Ball Chair – Exercise Stability Yoga Ball Premium Ergonomic Chair for Home and Office Desk with Air Pump, Exercise Guide and Satisfaction Guarantee ?22 x 22 x 31 inches