The notebook I'm using, which I really like, is exactly 4x6 inches - handy because it's so small, but big enough to be easy to use. This one is a little big. (I still can't find mine to link you to.) Looks stylish and luxurious, though. (Slim and easy to write in is probably what's really important. I can't tell for sure from the ad ... but it can't be too bad.)