This stone PP hard cover spiral notebook features a durable hard cover made from 50% polypropylene (PP) and 50% calcium carbonate, with a sturdy 2mm thickness. Inside, you’ll find 70 sheets (120 pages) of eco-friendly stone paper. Designed for convenience, it includes an elastic band to hold the included stone pen. This notebook is perfect for everyday use, combining durability with environmental responsibility and offering a smooth writing experience ideal for students, professionals, and creatives alike.