The Ardium Pattern Pen is a super colorful and fun pen! The Ardium Pattern Pen features many different color and vivid patterns. The Ardium Pattern Pen is a 0.38mm black ink pen. It will write very smoothly without any breaks! These fun and super colorful pens are great to use for work, school or everyday use! Add these pens to your stationery collection! It will also spice up your desk space too. Please check out the photos to learn more!