The Denim Sitting Ball, is a denim ball that is filled with air. It is a seating device filled with air and combines healthy sitting with demanding design in a unique way. The positive functional aspects of sitting balls have been commonly known for a long time: the support active sitting, strengthen the back muscles and effect a more upright posture of the spine than ordinary chairs. These are the reason why they are frequently recommended by doctors, ie. for working on the computer. Beyond that they can be used for other purposes, such as support during daily exercise.