Porsche pens are so uniquely made that they never fail to impress. The materials are inspired from the same hi tech materials used in their sports cars. Like the metal sheath in the Tech Flex fmodel which is the same material used to sheath the wires in the engine of the car, showing that a great deal of care went into its design and production. Each pen is packed in a attractive gift box that complements the pens design. William Penn is a authoriseed retailer of Porsche Pens and every purchase is accompanied by a certifcate of guarantee.