ZIG Writer is an acid free, photo safe, waterproof, fade proof, lightfast, non-bleeding, archival quality pigment ink pen which will stand the test of time so your precious memories can be preserved for future generations to enjoy. Use the writer for fun lettering styles in your memory books, scrapbooks, photo albums, journals, diaries, stationery, greeting cards and crafts. These markers come in a handy plastic case with a handle and lets you store the markers horizontally.