Premium 200gsm Acid-Free Paper: This heavyweight mixed-media sketchbook features high-quality 200gsm paper that withstands watercolours, acrylics, and markers without bleeding or warping. The acid-free composition prevents yellowing, preserving your artwork for years. Premium 8.9x8.3" Square Format (Trims to 8.3x8.3" ): Break free from standard rectangular sketchbooks with this perfectly Ohuhu sketchbook for markers. The balanced 21cm x 21cm dimensions offer 15% more drawing area than A5 while maintaining ultra-portability – slips easily into backpacks and tote bags. Mixed Media Sketchbook – Engineered to excel with both wet and dry media: Watercolours blend smoothly without pilling, alcohol markers show true colours without bleeding through, while charcoal and pastels adhere beautifully. The paper's optimal weight (200 gsm) handles acrylic layering while remaining workable. Artist-Focused Spiral Binding & Perforations: The durable lay-flat spiral binding works equally well for right and left-handed artists. Micro-perforated pages remove cleanly without damaging your artwork. The hardback cover provides sturdy support for outdoor sketching, making it ideal for UK art students and urban sketchers. Bonus Protective Writing Mat: Though the paper is strong and thick enough to prevent any bleeding, you can also place the soft writing mat between the paper to keep your pad in good condition anytime when you are drawing. Perfect gift choice for both children and adults at Christmas, birthdays, and more!