The Vivid Pen Set is a well made, useful and super fun pack of pens. Brighten up your planners or sketchbook with some fun colors! The pens in the Vivid Pen Set are 0.38mm, and the set comes with all the colors of the rainbow color spectrum. Closing the lid after using the pen will ensure longer life span for the pens. 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! The pen set includes 10 pens with different colors. It also comes with a PVC case and a super colorful notepad! Please check out the photos to learn more!