• Binder with 4 rings of 40 mm that allows you to efficiently organize documents and subjects. • Offers a storage capacity of up to 250 sheets, facilitated by its wide 6 cm spine and folio size (26.4x34 cm). • Made of high-quality hard cardboard, it provides protection against bumps and drops. • Extra-hard cover that ensures the durability and resistance of the binder for everyday use. • Exclusive NASA Black design, perfect for students and professionals looking for functionality and style in their school or office supplies.