Crayola Fine Line Markers lay down lots of ink, but they won't bleed through typical paper. Long-lasting marks wash away easily from skin and most clothing. Water-based ink doesn't bleed through most paper and can be revived within seconds in warm water if caps are left off. Tapered tips are perfect for lettering, outlining and detail work. Versatile conical tips write at any angle. Markers are certified AP nontoxic, conforming to ASTM D-4236.