Are you behind a desk all day? Have you tried these balance ball chairs? Today, you can get the Gaiam Balance Ball Chair for only $54.98! This alternative desk chair helps improve your posture and improve core strength- all while sitting at your desk. Designed for those 5′ – 5’11” tall and up to 300 lbs. It has an adjustable back support bar, wheels, air pump and desktop exercise guide! Talk about multi-tasking!