BOSS - Original Highlighter. The STABILO BOSS ORIGINAL is a classic for school, studies and in the office. Many people work with these handy pens especially for preparing texts. This allows you to easily mark important passages in different colours in order to have an overview at all times. With universal water-based ink for all types of paper. Applications: thanks to the long cap-off time, it is ideal for concentrated reading and learning. Refillable.