The very popular [standing] pen case. Just push it from the top to turn it into a pen stand. Holds up to 22 pens. (*The number of pens it can hold depends on the type of pen.)
*When putting away pens, pull out the bottom of the case. *The lid has an eraser holder. *Pull the head out a little to accentuate your bag.
It is also popular as a tool bottle to put in a bicycle drink holder.
