Designed by artists for artists.illo Sketchbooks are 25cm x 25cm creating a huge square drawing surface perfect for any artist at any skill level.Take your drawings from paper to social media easily without the awkward cropping.Grey hard cover/ 112 pages / 60kg, 180 gsm paper / elastic enclosure/ stylish ribbon marker / back page pocket, layflat design.This sketchbook works well with all mediums.Perfect for dry mediums.Water based media should be used lightly.