"Pigma Micron Fineliner Pens feature archival quality ink for use in acid-free environments, and these pens are chemically stable, waterproof, and fade resistant. Avoid smears, feathers or bleed-through on most papers with these black pens. Pigma Micron pens are certified non-toxic, approved by ACMI toxicologists, and bear the trusted AP Seal.Use for graphic art, scrapbook, archival recording, pen and ink illustrations, freehand art, rubber stamps, cartooning, and more.Due to the delicate nature of the smaller nibs, apply gentle pressure during use to avoid bending.Pigma ink, invented by Sakura over 30 years ago, continues to be the most reliable permanent ink on the market today. Artists, the government, and scientists consider Pigma Micron a basic tool for any archival-quality, handwritten project.Use Pigma Micron to leave a mark that will last a lifetime. Manga artists, professional illustrators and watercolorists use the seven point sizes to create precision lines.About SakuraTo be human is to be uniquely creative. We have a drive to create-new ideas, stories, products, art, and more. While technology will change the way we live, only we as humans have the particular ability to imagine and unlock possibility. At Sakura of America, we foster this incomparable human capability to think, dream, experiment, and connect.We know everyone is capable of creativity. This trait is within everyone, not just select people. Whether you are using our products for artwork, expression, problem solving, storytelling, or organization, creativity is at the core-allowing us to connect with ourselves and with others. We believe if you foster your creative abilities, you can reach your full potential.We encourage people to take a moment to explore how creativity unlocks new perspectives, self discovery, and human connection."