Never lose your pen again, with these pen loops by leuchtturm. The pen loop is stuck on the inside of the back cover.  It attaches using a super strong adhesive, meaning once they are stuck on, they will stay in place, nice and snuggly. The pen loop is made of a strong elastic strap, making it perfect for thin pencils to thick fountain pens. Looking for stationery? There is plenty to chose from here at designist. How does it come: On a cardboard sleeve. The penloop is made from elastic and plastic.