The two bras in this photo are the same band and cup size. The bra on the left is the demi cup and the bra on the right is a full cup. the full cup has a full coverage cut that comes high on the chest. The adjustment hardware is in the front for super easy adjustability. This is a great option for folks wanting a little more support and coverage in their bralette. The demi cup sits much lower on the chest and has a lower profile on the side cut and the back band. Smaller busts might appreciate this cut.