J.Crew Secret Wash Shirt in Checked Heather Poplin Our Secret Wash shirts are exceptionally soft, thanks to a top-secret multistep wash process that we first launched in 2005. As a stylish detail, we made the fabric for this slim-fitting shirt from heathered yarns, which give it subtle flecks of color. Size XS 100% Cotton Button down collar In excellent pre-owned condition. See measurements below (in inches) and compare to your favorites at home. Underarm to Underarm: 21 Collar to Hem: 29 Collar to Cuff: 31