Thank you for viewing! You can write on various things, even though it's water-based! This marker has good color development and doesn't bleed or show through. It has vivid colors like poster color, doesn't damage materials, and has no unpleasant odor. It's highly water-resistant, and you can write over it when dry. You can write on various things like metal, glass, plastic, and mirrors. - Brand: uni - Product Name: POSCA - Model: PC-3M - 8-color set (blue, light blue, green, yellow, red, pink, white, black) - Features: Water-based, water-resistant