A long close-fitting garment, covering the body from the neck to the ankles. It is fastened in the front from the top to the bottom by means of buttons. A small aperture is made in the neck-band in order to expose the collar. The ordinary soutane has no train, but is of equal length at the bottom. This garment is worn at the celebration of Holy Mass; and, by particular law, when at home or in the church.