This product is a note book, made of solid materials, safe and firm. It can last for a long time without being easily . The product is a practical spiral notebook that can bring you more convenience, allowing you to have comfortable experience. Features -Color:Black -Material:Paper -Size:25.00X17.40X0.05cm/9.82X6.84X0.02in -Versatile: Ideal for sketching, taking notes in college, jotting down math equations, and more -Gifting: A thoughtful present option for friends, family members, or colleagues in the -Wide compatibility: The paper material is specifically designed to work well with most fountain pens -Easy to use: The double coil binding adds both strength and flexibility, making it easy to use -Sturdy: The kraft paper cover is not only sturdy but also provides a sturdy surface for drawing or writing, even while standing Package list: 4 x notebooks