The Lumocolor Non Permanent Medium 4 pack in assorted colors offers versatile marking solutions for a wide range of materials. Designed as a universal pen, it performs reliably on nearly all surfaces, making it ideal for labeling and temporary markings. Its water-soluble ink ensures easy removal, allowing marks to be wiped off films and other surfaces with a damp cloth without leaving residue. Fast-drying and suitable for overhead projection, these pens provide clear, vibrant lines that enhance visibility and precision in professional settings. This pack combines convenience and functionality for experts requiring dependable, non-permanent marking tools.