Size (for one book) 6.3cm wide x 8.5cm long x 1cm thick *Since it's unopened, the design of the notebook's interior is unknown, but the paper quality is likely washi (Japanese paper). Shipping will be by anonymous delivery. Although unopened, this item has been stored at home. Please understand this before purchasing. If you don't need the case and only want the 12 notebooks after they've been opened, I will sell them for 1,000 yen. Thank you for your understanding.