Christopher & Banks size med rust color button down, top three-quarter sleeve

Christopher & Banks size med rust color button down, top three-quarter sleeve The sleeve can be rolled and buttoned with the tab on the sleeve. The measurements from armpit to armpit are 19inches across without being stretched. Stretched it would be 20 inches across From the shoulder down is 24 inches Brand new with tags. Made in Vietnam 80% polyester 20% cotton