THIS IS A LIKE NEW WOMAN'S ZOE & CHLOE BRAND SHORT SLEEVE SCRUB TOP SHIRT SIZE M.THIS BRAND MAY RUN SMALL.PLEASE CHECK MEASUREMENTS NOT ALL BRANDS MEASURE THE SAME.IT MEASURES 21 IN FROM ARM PIT TO ARM PIT.IT MEASURES 17 IN FROM ARM PIT TO HEM.IT IS 92% POLYESTER,8% SPANDEX.I ALSO COMBINE SHIPPING.