Sketchbook Premium Mixed-media 150 g/m² Stillman & Birn 20x25cm Mixed media notebook with flexible cover perfect for travel and carrying. 46 white sheets. Thick 150gsm paper with a medium grain ivory tint. Perfect for dry techniques, light washes, ink, marker, drawing and multi-techniques without applying too much liquid. Cap color: maroon. Acid-free, neutral pH. Available in various sizes. Vertical orientation. Size: 20.3x25.3cm Brand: Stillman & Birn.