Specifications:Yoga Ball size: diameter 65cm suit for 160-165cm height,diameter 55cm suit for 150-160cm height

Colors: Yellow, Blue, Red, Gray, Purple                                  Diameter is diameter is 65cm suit for 160-165cm height.

• Alternative desk chair created by leading health & fitness experts to improve back health and core strength
• Featuring the same yoga ball as the exercise guide.
• This chair helps to build a healthier core, align the spine, relieve back pain and stiffness, boost energy levels and increase productivity with an active body and a focused and engaged mind
• Designed for users 150cm-165cm tall and fits most standard-height desks. 300-pound weight capacity.
• Color: 5 color for available.
• Includes: removable 55-centimeter exercise ball, an air pump, an adjustable metal support bar, 4 easy-glide casters and a desktop exercise guide
• It may be necessary to re-inflate the ball after initial inflation, allowing the ball’s material to stretch to its final size. Inflate ball with air, let stand for 24 hours, deflate 50% then fill again to 55cm height