Size S = approx UK 10. Please do check the measurements and compare with something that fits you well. Approx measurements in inches when laid flat:
underarm to underarm 18
length from shoulder 28
shoulder to shoulder, across back 15.25
sleeve length, shoulder to hem 23.5
70% polyester, 27% viscose, 3% spandex. Lining 100% polyester. Machine washable.