Long sweater from INC International Concepts size medium

Black ribbed sweater in a medium. No buttons. I think this is a duster cardigan. 2 side slits (see pic). Approximate measurements: pit to pit 17 1/2”, width 16”, length (shoulder to hem) 42 1/2”, slits are 15 1/2” long. 💯% viscose. Gently worn. Please ask any questions before ordering.