Some Anglican clergy favour a double-breasted cassock (known as a Sarum), often with an external button at chest level on which to hook an academic hood (which is worn as part of the choir habit). However, most Clergy, includingAnglo-Catholic Clergy, choose the single breasted cassock. Like Roman Catholic clergy, some Anglican clergy wear the fascia (known within Anglicanism as a cincture) around the waist, while others prefer a belt.