Stabilo Boss Original Highlighter A CLASSIC. A RECORD HOLDER. A MARKET LEADER Stabilo Boss is the best-selling highlighter in Europe since 1971. The only highlighter available in 9 fluorescent colours. The distinctive design stops the pen from rolling away and makes it usable anywhere. Ideal for everyone who reads texts and has to concentrate on the essential information. 2 line-widths, with refillable, water-based ink for paper, copy, fax. Long cap-off time -up to 4 hours.