P3110 Collection P3110 Collection by Porsche Design introduces a sporty new line of writing instruments that have the perfect synergy of design and quality. The unique design idea is based on the TecFlex material, which exhibits a snake-like flexibility while holding it. It stands out for its excellent corrosion resistance and is used in Porsche cars to withstand the heat and pressure. Porsche Design writing instruments are available in stainless steel or stainless with 14kt gold weave with palladium coated accents.