The Moses Sweater from Carin Wester is a black simple 50/50 acrylic/cotton mix which sits loose and it cropped high on the waist. Not your normal sweater, but you may accomplish the same effect with some shrinkage and pulling on an old sweater sitting in your closet. Consider this one professionally made. H&C has them.
More looks at the Carin Wester The Moses Sweater after the click.