I agree with Renault78law: DB coats should, all other things being equal, be slightly shorter. Â It's basically a matter of the optical illusion presented. Â Because of its wrap and almost dead-straight bottom edge, a DB coat "envelops" the wearer and appears longer than an SB coat of the same length. Â Because there are no open quarters, or curved front bottom corners, you don't see the trousers at all until they emerge from under that straight bottom edge. Â Thus the leg line appears shorter, and the trunk longer.