Water-based marker in unique and gentle colors that give a soft result on the paper. It does not bleed through paper. The perfect flow makes the pen the first choice for people who want to bring life to their bullet journal or those who want to color their note books. The pens work on slightly thinner paper, unlike regular markers that often bleed through and therefore requires thicker blades. Mildliner is equipped with two tips, a bold and a fine, which makes it a versatile marker useful for both coloring and coating. AP certified and non-toxic.