Canson Bristol paper - Smooth 250 GSM 21.6 x 27.9 cm or 8.5 x 11'' Pad of 20 Sheets , with its satin finish, is ultra-white and extremely smooth. Highly resistant, it withstands repeated corrections by scraping and erasing. It is ideal for pencils, pens, washing, tubular tip ink drawing pens, microns, alcohol-based markers (ProMarker), airbrush work or any technique requiring a smooth surface and sharp lines.