Haarlem is a son of the successful Dutch progenitor, Voltaire. Voltaire jumped internationally under Jos Lansink and Emile
Hendrix. His reputation has grown through siring international jumpers such as Finesse, Dante, Altaire, Flyinge Electro, Play It Again, etc.. Haarlem's mother, Berdieta, descends from Irco Polo, another international jumping stallion. The mother line of Haarlem returns brings the blood Pericles xx, sire of a line of international jumpers like Future van Wout-Jan. In spite of Haarlem's busy occupation as a breeding stallion, he competes in sport under Karel Cox in national and international Young Riders competitions. The offspring of Haarlem do will in testing and are very competitive and saleable internationally.