The pen loop is not only very practical, it is also a stylish design accessory. The pen loop is easily affixed to the back inside cover with the self-adhesive surface. The strong elasticated loop keeps a writing instrument firmly in place - whether it is a thin pencil or the hexagon-shaped Drehgriffel Nr. 1 pen. Your favourite writing instrument is not only kept firmly in place, the pen loop also adds a stylish colour accent to your notebook. LEUCHTTURM1917 has pen loops in either the same or a contrasting colour to its range of notebooks and planners.