Black heathered, split back sweater size small

Black heathered salt and pepper sweater. Long sleeve size small. Wider neckline, shorter front with longer back that is split. Super soft. tags have been removed but gathering from the measurements I’d say it’s a small. does have some stretch to the mid weight fabric. Great condition. Measurements are 20 inches across chest measured from pit to pit front length of sweater from top of shoulder ham is 24 inches back of sweater at the longest part is 26 inches sleeve length 18 inches from bottom of sleeve to armpit.