The Orer of Cistercians (OCist; Latin: Cistercienses), sometimes called the White Monks (from the colour of the habit, over which a black scapular or apron is sometimes worn) is a Roman Catholic religious order of enclosed monks. The first Cistercian abbey was founded by Robert of Molesme in 1098, at Cîteaux Abbey. Two others, Saint Alberic of Citeaux and Saint Stephen Harding, are considered co-founders of the order, and Bernard of Clairvaux is associated with the fast spread of the order during the 12th century.