When I first saw this accessory, I though "what the heck?", but as I began using it more and more, it became a go to. The Strap Pen Case is manufactured in Leatherette (vegan) and it sports and elastic band that is quite useful on books, notepads or agendas. Besides working as a bookmark, it will also host pens, pencils and highlighters comfortably to make note-taking a breeze.