• 100 sheets of 90 g/m² paper that allow writing without ink bleeding through. • A4 size of 22.8 x 30 cm ideal for notes, diagrams, and work. • High-resistance hard cover to protect the sheets from daily use in a backpack. • Interior with 5 mm grid that facilitates clear and organized writing. • Spiral binding that allows for a 360º opening. • Exclusive design from the Yale University Dog line with a professional and functional style.