Form and function - the brand values of Porsche Design are perfectly combined in the Shake Pens. Since many years it is the flagship product of the Porsche Design Writing Tool assortment. The proven shake technology of the famous pocket ballpoint pen is inserted in a full-fledged product - the Shake Pen Big. With a short and quick movement of the wrist the refill appears. Repeat the same movement and the refill disappears inside the barrel again. The Big pen is made of aluminium version, the Big Twist silver finishing. The PD logo is solely outstanding on the clip of the end part which is as the front shiny stainless steel. It uses the standard size ballpen refill.