The Happy Day Pen Set is a cute and colorful pen! The Happy Day Pen Set comes with 10 pens as a set per purchase. It includes Black, Red, Pink, Orange, Sky Blue, Blue, Apple Green, Grass Green and Purple (2 black color pens). Each style name represents the pen’s color. This is a 0.38mm pen. This pen set features fun and colorful patterns on the body of the pens! These adorable pens are great to use for work, or school! Collect them all and take it with you everywhere! Please check out the photos to learn more!