The Vivid Pen is a well made, useful and super fun pen. Brighten up your planners or sketchbook with some fun colors! The Vivid Pen is 0.38mm pen, and it comes with all the colors of the rainbow. Closing the lid after using the pen will ensure longer life span for the pen. Each pen has an apple shaped hole on the cap for connecting with a strap or on a ring so that you can take it with you anywhere! Please check out the photos to learn more!