The tree-free A4 Notepads are made from high-quality, sustainable, and recyclable stone paper. These Notepads provide ample space for all of your notes and ideas. With a top flip binding, write or draw comfortably from any angle, and remove each sheet with ease along the micro-perforation. Karst's unique, eco-friendly stone paper material is acid-free, bright white, and waterproof, with a premium look and feel.