Sturdy and Durable: Crafted from 3D printed PLA material, this Notebook Case ensures robustness and longevity while delivering a striking display effect without additional support. Versatile Paper Compatibility: Compatible with a wide array of papers and pens, this case accommodates A4/A5 (folded) or letter sizes, holding up to 20 sheets (80 pages) effortlessly. Convenient Pen Compartment: Featuring a 10mm pen compartment, this case keeps your pens and clips secure, providing easy access and organization for your writing essentials. Easy Assembly and Eco-Friendly Design: With just 2 bands and copy paper required for assembly, this environmentally conscious case can be put together in 5 minutes without the need for glue, promoting sustainability and reducing waste. Modular and Cost-Effective: Boasting replaceable pages and a durable modular design, this case simplifies page replacement with stored used pages secured by rubber bands. Its sturdy shell ensures long-lasting use, making it an eco-friendly and budget-friendly choice for various occasions. Item Name: Notebook Cover Material: Plastic Styling: Simple Features: Protective, Pen Compartment, Portable Size Details: L: 22cm/8.66", W: 22cm/8.66" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Notebook Cover