The Spokey HALF FIT is a versatile exercise ball that offers exceptional support and stability for a wide range of exercises, ensuring an effective and comfortable workout experience. It is a great substitute for achair in the office or at home - sitting on the ball requires correct posture. The HALF FIT gymnastics ball helps in developing balance. It can be used not only for exercising or rehabilitation, but also as a chair to relieve the spine during long hours in the office or at home in front of the computer. A part of the ball has massage protrusions that stimulates blood circulation.