Seth Cole vellum drafting paper is a medium-weight 16 lb. basis vellum manufactured from 100% new cotton rag fibers with a non-fading blue-white tint. Finely-grained surface that is excellent for pencil and pen receptivity. Advantages include: leaves no ghosts, smudges, or smears when erasing; high tensile strength prevents tears; resists aging and yellowing. Available with Engineering and Architectural title blocks and borders. Similar to Clearprint and Alvin Alva-Line vellum papers. Seth Cole drawing vellum is quality-made in the USA.