This sleek gunmetal rollerball pen by Hugo Boss is from the Stream range and has an intricate textured pattern on the surface, which adds a modern touch. The Stream diamond rollerball has a polished gunmetal clip that can be engraved at the time of purchase. Around the barrel the black band has the hugo Boss brand name in white, which keeps the branding simple but eye-catching. The Hugo Boss Stream gunmetal rollerball pen comes complete with a two-year guarantee and a bespoke Boss gift box. This style is also available in both a fountain pen and a ballpoint pen.