Exercise Ball Office Chair Kit Strengthens Posture and Core for Under 6-Foot Crowd
• Designed for people 5' - 5'11" tall, comes with exercise ball, pump, materials to assemble chair, and exercise guide
• Ball can be removed from chair to use separately, 2" leg extenders sold separately for taller people
• Helps strengthen back, legs, shoulders by forcing you to sit upright instead of slouching
• Reviewer uses it at office job instead of regular chair, wishes could bring to client meetings
• Reviewers note improvement in back pain, core strength, posture from using ball chair at work