I am happy with these colorful fine line markers.  I like to watercolor loose shapes so I can then use the thin lines in a painterly way to sort of outline flowers, trees, etcetera.  All shapes.  I also like to doodle with them.  This is a fun way to give something abstract some structure.  I recommend putting the caps on pretty soon after opening them due to the nature of this type of medium.  Nice!  Good buy!