The perfect plein aire painting companion and watercolor sketchbook journal to map your progress within the medium.No matter what your skill level, the paper matters greatly to the look of your finished piece of art. This watercolor sketchbook features an acid free paper with a clean white appearance, a beautiful cold pressed fine texture and heavy tub and external sizing to allow ink and paint to sit up nicely on its surface. The 300 gram weight (140lb Imperial) is beefy enough to handle watercolors, thinned acrylics, acrylic inks, spray colors, markers and other wet media and works wonderfully with fine line pens, graphite, crayon, oil pastel, standard colored pencil and watercolor pencil. Use to create all types of watercolor painting, graphic and fashion designs and mixed media works. Books feature special deluxe Smyth sewing which not only secures all 24 sheets inside but allows the book to layout completely flat for working two-page spreads that are wonderful for depicting cityscapes, seascapes and landscapes. Books feature heavy covered board cover and back with inside pocket and elastic strap to keep books from opening between uses. Each sheet has a fine perforation allowing it to be removed without harming the artwork.