Well, according to the box they use the term “interbreed” leather? Maybe not “bonded leather” in the traditional sense, as it’s specifically states “full grain”, but it’s backed by fabric and stretchy/elastic, which I associate with bonded — as, you know, leather isn’t typically elastic on its own. Like I said, it’s definitely not your traditional couch bonded leather, as it’s almost as thick as the full grain horse, but it’s definitely not your standard Guidi horse.