Designed by Clay Kippen, Zena Verda Pesta and Richard Clarkson.

The U Stool promotes active sitting with its unique "U" shape. It engages the participant by gently rocking, allowing them to use their abdominal muscles and feet for support. It is easier to sit for longer periods of time on the U Stool because the user is constantly shifting position, reducing the amount of mechanical load on the back, hips and other parts of the body.