Amazon.com: 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, Black: Sports & Outdoors Welcome to the world of active sitting and a chair that just might change your life. Our bestselling balance ball chair provides all-day ergonomic support for a stronger healthier back. Amazon.com: Gaiam Kids balance ball chair – Classic Children’s Stability Ball Chair, Child Classroom Desk Seating, Blue/Green: Sports & Outdoors Order your active sitting balance ball chair today from Gaiam. Our Exercise, yoga and stability ball chairs are the latest in fitness sitting. Improve your muscle strength with this Gaiam balance ball chair. I recently came across this article, which talks about using an exercise ball as your home or office chair. I have used an exercise ball as a chair before, and it was thoroughly enjoyable. .