Bao Core PU Leather A5 Size Business Zippered Travel Portfolios Executive Loose-leaf Notebook with Calculator Card Slots Padfolio Ring Binders Multifunction notebook,PU leather cover,upscale outlook, fashion and durable,great for business use Embedded solar-powered calculator makes it easier for your office work,especially great for finacial staff, you are no longer need to carry a calculator with you all the time Zipper closure,so you can also use it as a portfolio, when you finish a meeting, you may receive some paper material except write down what the meeting delivered,then, you need this portfolio notebook, it can hold your extra paper material and writting information.How great it is. Ring binder paper, you can freely reorder and organize your note With card slots and pen holder,meet most your requirement at work. What' more, the cover of this notebook is made of high quality PU leather,it is waterproof and toughness strong