Staedtler Triplus Ball 437 Triangular Ballpoint Pen

Ballpoint pens feature an ergonomic barrel that provides a comfortable grip for relaxed, fatigue-free writing all day long. 1.0mm point lays down the smooth-flowing for consistent results. Airplane-safe design uses automatic pressure equalization to prevent your pen from leaking when you're on a flight. Pens with blue ink are perfect for everyday use at home, office, school and more.