Athleta women’s blue top size small 95% polyester and 5% spandex

Athleta women’s blue top size small 95% polyester and 5% spandex. Worn several times and a bit small for me in underarm drop as I usually wear M. It’s a generous small. Pit to pit measures approximately 20”, underarm shoulder to underarm 7”. Length back shoulder to hem is approximately 24”L. Material does have give and very comfortable.