The standivarius Libro K is a portable A4 fold-away document holder and writing slope. 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 or a tablet. With 4 height adjustment possibilities it matches all height and opening angle requirements. It is also an excellent space-saver as it has a small footprint and it folds flat to just 2.5 mm - a good ergonomic companion for small desks.