Fashion Bug Stretch women's plus size 18/20 button front blouse is made of 66% polyester, 30% nylon, 3% spandex and 1% metallic. It has vertical stripes and chevron stripes. There is a slit on the cuffs of the sleeve and on the blouse. It has 3/4 length sleeves. Under arm to under arm measurement laying flat is 24 inches.