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 a lounge or waiting area. The integrated exercise ball is covered with a polyester fabric and allows for three-dimensional movement of the seating surface. The seat firmness and vertical rocking effect can be individually adjusted to the corresponding body weight using air pressure regulation.