The ZIG Memory System Millennium range of pens are permanent, lightfast, acid-free, photo safe, and archival quality. They do not bleed through most papers making them ideal for all your journaling, scrapbooking and card making. This easy writing marker is essential for all your letter writing, as it is perfect to preserve all your memories for many years to come. Not only can it be used as a writing instrument but also for budding artists. After drying, the water-based pigment ink is smudge, fade, and waterproof. This special formulation of pigment based ink is more complex and stable than dye based inks. ZIG Millennium pens are ideal for all types of work, from creating a masterpiece to cherishing your memories, this is one classic ZIG tool you don’t want to draw without.