I have mixed feelings on these. The quality is great, the plastic holder is handy and sturdy no complaints there. They are very saturated so I think they will last a long time. My big complaint is the colors of the pens are SO VERY DIFFERENT from what the pen actually colors. There is no true red, but a lot of oranges. All the colors are darker than the pens. I have been using them in Dover coloring books and am sad to say they bleed thru some. So I have to pick which side I like better. I usually use colored pencils but decided to try something different. I happen to have a red pentel marker that is about 20 yrs old and it still had ink, back then the cap was snap on.