Sit down in order to keep your tummy flat. What is it? It is a kind of flower with four petals, in an effort for softness. For whom? For people, and women especially, who dream to have a beautiful flat tummy, saving the esthetic of their living-room! How does it work? It is an accessory to help people practice their abdominals without back pains. You just have to sit down on it, incline your back and stay in static position to keep your abs tight!