This is one of the marble series, A5 size hardcover notebook.
This series have five colors: blue marble, purple marble, green marble, pink marble and gray marble.
These five notebooks have different cover materials, we use 157gsm coated paper+2mm grey, PU+2mm grey board, 120 gsm touching paper+2mm grey board and cloth+2mm grey.
And the inner page is 80gsm two sides offset paper 96 sheets.