The rare P6001 is Rodenstock's version of Carrera-Optyl's 5688 half rim frame and features the same unique design. Perfect curves merging into each other, tubular hinges hidden inside the frame and an incredibly sturdy and lightweight titanium frame. Produced in Germany by Rodenstock who acquired the Porsche Design license from Carrera Optyl after the brand was sold to Safilo. Size Medium (52*20) Front width temple to temple: 138mm / 5.43 inches DOES NOT COME WITH BOX