With its unique design featuring illustrations of the human skeleton, this hardcover notebook with sleek black pages presents a striking and unique canvas for keeping detailed medical notes, recording anatomical observations, or simply allowing your creativity to flow onto its pages. Each cover in the Dark Matter series celebrates the beauty found in darkness and scenes made by the faintest light. Embody the essence of artistic expression as you fill the pages with your thoughts, ideas, and dreams. This extra-thick 120 gsm black paper works great with gel pens (for the brightest colors, look for ones formulated to work on dark media, like our Supernova Pens), metallic pens, pastels, and even some paints.