The Sitness 5 is a versatile fitness stool. The integrated exercise ball not only provides an alternative for active sitting but also gives it a unique shape that is guaranteed to be an eye-catcher, whether in a home office or in a lounge or waiting area. The integrated exercise ball (covered with 70% wool, 25% polyamide, and 5% other fibers) ensures three-dimensional mobility of the seat surface. The seat firmness and vertical rocking effect can be individually adjusted to the corresponding body weight using air pressure regulation.