It is a very special kind of muslin cloth weaved with Gold and cotton thread made for the King and used for Royal clothing in the Mughal Empire. The Mulboos khas was a kind of first-grade muslin exclusively manufactured in Royal Karkhanas ''Mulboos khas kootees'' notably in places like Dacca, Sonargaon, Jangalbaree. Nur Jahan, the empress, was a great admirer of Dacca muslins. Mulboos khas was the finest and most expensive type of muslin, and it was used exclusively in Imperial use. Mulboos Khas was an item of gift exchanged between the emperors and nobles. Murshid Quli Khan who was the first Nawab of Bengal was used to send Mulboos khas to Aurangzeb. In 1298, Marco Polo described the cloth in his book The Travels. The 16th-century English traveller Ralph Fitch visited India in 1583, described Sonargaon, "as a town ...... where there is the best cloth made in all India".