Read the dialogue and answer the question!

Fatih: Hi Farhan, is this your notebook?
Farhan: No, my notebook is thick.
Fatih: This notebook's cover is red. I saw you have a red-covered notebook. Is this really not yours?
Farhan: No, that is not mine. My notebook's cover is red and it is thick. That is a thin notebook and the cover is red.

What are Farhan's notebook's characteristics?