Stability Ball Chair Exercise ball chairs promote a healthy, active lifestyle and are ideal for students, teachers, offices, gyms, physiotherapy and more. The chair is a classic yoga ball that activates your oblique and abs to strengthen your core without requiring extraordinary movements. However, you can always include some fitness exercises if you are looking for a harder workout! A hand pump is included for fast, easy inflation. Sculpted rear Lower back support is crucial for the spine and back health when sitting in the same position for long periods. This exercise ball holder is designed with a sculpted back to provide ergonomic support and improve your spinal alignment, resulting in less stiffness and pain. Easy to transport You can take this rolling ball chair wherever it needs to go. Between its wheelbase, lightweight components and compact design, it's a breeze to push, pull and carry. - Ball, Base and Pump included - Dimensions: 20 x 31 inches - Weight: 13 lbs