The Pentel Wow! retractable ballpoint pen offers a distinctive design that stands out in a crowd. The unique triangular-shaped barrel comes in variety of stylish transparent colors to match your own personal taste. The latex-free grip is also triangular which makes it easy to hold and keeps the pen from rolling off your desk. To advance the tip simply click the top; click the side button to retract. 1.0mm metal tip writes medium lines. The ink colors match the barrel colors for easy color selection.