NARA Papers for Alcohol Ink Painting are High Quality 100% Stain-Free, Durable - Long Lasting on Shelf, Non Tearable and Waterproof. NARA Papers are available in Pre-Cut Sizes and Shapes (Rectangle, Square, Circle) and they come in 3 main sub - categories to chose from in terms of Thicknesses (Microns) and Weights (GSM): 1. Medium - 275 Microns / 200 GSM, 2. Medium Plus - 330 Microns / 250 GSM, 3. Heavy - 430 Microns / 320 GSM. This high quality Synthetic paper can be used for Alcohol Ink Painting, Acrylic Painting, Watercolor Painting and more. NARA offers Customization options to Artists, Painters etc. * Conditions Apply Certain Ink Shades/ Brands can have super pigmentation which can leave stains as these batches have excess additives, so chances of staining, so please take appropriate care!