Article: Women could not be professed to the Dominican religious life before the age of thirteen. The formula for profession contained in the Constitutions of Montargis Priory (1250) demands that nuns pledge obedience to God, the Blessed Virgin, their prioress and her successors according to the Rule of St. Augustine and the institute of the order, until death. The clothing of the sisters consisted of a white tunic and scapular, a leather belt, a black mantle, and a black veil. Candidates to profession were tested to reveal whether they were actually married women who had merely separated from their husbands. Their intellectual abilities were also tested. Nuns were to be silent in places of prayer, the cloister, the dormitory, and refectory. Silence was maintained unless the prioress granted an exception for a specific cause. Speaking was allowed in the common parlor, but it was subordinate to strict rules, and the prioress, subprioress or other senior nun had to be present.

Now answer this question: What type of veil must the sisters wear?
black