This notebook is made with soft, airy paper containing 20% cotton pulp, giving it a smooth, gentle texture and an elegant writing experience. The airy cotton pulp adds depth to your handwriting, allowing you to express the letters and images you want exactly as you imagine them. The soft white color derived from cotton is what we sought, allowing colors to pop. It brings out the colors of ink and colored pens, and has the capacity to accept writing to its fullest. These unlined notebooks are blank and limitless in terms of image and ideas. They come in two sizes: A5 and A5 Square, which unfolds horizontally when opened. [Ultimate writing comfort and design] The notebook opens a full 180 degrees and is bound with durable thread for a stress-free writing experience. The book is wrapped in glassine paper, reminiscent of old paperback books, which also serves to prevent dirt. You can use it as is, remove it, or use a recommended clear cover to give you creative freedom over your cover design. It comes with index stickers that match the plain cover, which is simply fastened with cheesecloth. [Covers (sold separately)] To help you use your MD Notebook for a long time, we offer a variety of notebook covers in special sizes, including paper covers and clear covers.