Tip Ton is a chair by Edward Barber and Jay Osgerby for Vitra, polypropylene. Stackable up to 4 chairs. Tip Ton is dynamic sitting that combines versatility, functionality, with particular attention to health. This chair makes possible the dual sitting position, from a rest position, in fact, Tip Ton tilts forward until the user reaches a defined point (9°), then the chair in the sitting position arrives gently stretched forward. The innovation is created by the shape of the runners of the chair which rest on the floor. This new sitting position, straightens the pelvis and spine and improves blood flow. This means that the benefits of dynamic seating with forward tilt can now go to the benefit of users in many more environments, including schools, libraries and cafes. Due to its appearance, Tip Ton enhances the environment in which it is inserted.