Size: Approximately 15cm wide, approximately 14cm long (including the clasp) Inside, when you open the clasp, there is one pocket on one side. I've used it a few times, but I don't think I'll be using it anymore, so I'm putting it up for sale. The clasp part seems a little blackish. There is also a feeling of use. Please consider this, understanding that there may be age-related deterioration and that it has been stored at home. Thank you very much.