21.7-in. balance ball provides a core-strengthening workout during your daily routine. Ergonomic back support offers comfort while you sit. Helps improve spinal alignment and reduce nerve compression. Removable balance ball can be used for exercises on and off the chair. Includes an adjustable support bar and an air pump. Designed for 5 ft. – 5 ft. 11 in. height and up to 300 -lb.
Amazon Prime eligible.
This deal is expected to expire at 3:00am on Monday August 29th, 2016.