Material: PVC Size: M5-12.6*9.5*2.5cm / 4.91"*3.71"*0.98" A7-14.5*11*2.5cm / 5.66"*4.29"*0.98" A6-19.6*13.2*2.5cm / 7.64"*5.15"*0.98" Color: As shown 1. It's waterproof, protecting the inner pages from damage and suitable for long-term use. 2. The double-lock design securely stores paper and allows for easy addition and replacement of pages, enhancing flexibility. 3. The inner pages are interchangeable and support various sizes of loose-leaf paper, perfect for note-taking, planning, journaling, and other recording needs. 4. The lightweight, pocket-sized design makes it easy to carry around and capture inspiration and important information anytime, anywhere. 5. The simple and stylish design, available in a variety of colors, showcases your personal style, making it an ideal choice for students and professionals. Package Includes:1pc loose-leaf notebook