The Sveltus gymnastic ball is perfectly suited to fitness and gymnastic exercises. It has a highly beneficial effect on the spine and back and works the deep muscle layers, as well as the stomach, back, buttocks, but also the arms and legs. The Sveltus gymnastic ball is also ideal as a sitting ball for ergonomic sitting and trains balance while activating the muscles of the spine.Available in three different colors and sizes:Red gymnastic ball 55 cm in diameter Gray gymnastic ball 65 cm in diameter Purple gymnastic ball 75 cm in diameter Maximum load approx. 120 kg