Mizutama-san, this is an M5 square notebook refill. I bought it, but it was the wrong size, so it's been stored at home since I opened it. The number of sheets is approximately: * Candy pattern: 30 sheets * Pink floral pattern: 30 sheets * Orange frame: 29 sheets * Blue: 28 sheets * Pencil pattern: 30 sheets I counted them twice, but there might be a slight error in the number of sheets. I remember using a few, so I've marked it as having some damage. Due to the above reasons, I'm selling it at a low price, so please refrain from purchasing if you are sensitive to imperfections or seek perfection.