Prang - DIX80715 Washable markers feature fine points for detail and accuracy. Long-lasting, super-resistant, 2.75mm nibs provide durability. Superior ink delivers a smooth laydown and accuracy. Washable ink won't bleed through paper, making these markers mess-free. They are ideal for lettering, drawing, outlining and detail work. The caps are ventilated and meet all small parts consumer safety standards. Ink is certified AP nontoxic.