The Standivarius Libro B is a portable A4 fold-away book holder. It has been designed to provide a correct in-line working position to relieve back / neck pain. It can be used to hold single documents, A4 spreads, open books or just tablets, what ever you need for your work. With 3 height adjustment possibilities it matches all height and opening angle requirements. It is also an excellent space-saver as it has a smaller footprint and it folds flat to just 2 mm - a good ergonomic companion for small desks. It is portable in a protective sleeve when folded.