Swiss balls are relatively new to the North American continent, however they have been used for decades by physical therapists in Europe for rehabilitation and fitness. The Swiss balls become a great tool for mobilization, coordination, strength and balance. Exercise routines that address the fitness of the stomach, back, buttocks, and thighs are beginning to gain acceptance on this side of the ocean. Many athletes are turning to the ball to gain strength and performance improvement. Sit on a ball is a phrase that is coming into favor. In Scandinavia, Germany, and Switzerland entire office buildings and schools have been equipped with balls, not chairs, for sitting. The benefits of ACTIVE SITTING are becoming better understood by doctors, physical therapists, and mothers when addressing the problems of many hyperactive children. The newest item is birthing on the Swiss Ball. During pregnancy, labor and the post-natal period the ball provides a wide variety of exercises that proved to be very beneficial to mother and child. Especially the Sissel ABS-PRO Swiss Ball provides the highest safety standards required for pregnant women and mothers. See the Swiss Ball Stabilizer for a more stable exercise platform. Available in 45, 55, 65, or 75 cm sizes.