The LAMY swift rollerball pen needs no cap at all (rare among quality rollerball pens). The metal casing has a perforated grip area, which helps you to hold on, and simultaneously gives the pen a stylish look. It has a push-button retractable clip in a classic style that demonstrates the basis of Bauhaus design: form follows function.
Rollerball pens use water-based ink and require less pressure to use than ballpoint pens, making them more ergonomic. To work best, use with quality paper.