It's Asian size,please check the detail size on the size chart image.
<br />100% Brand New. 
<br />Material: cotton blends, polyester 
<br />Color: Gray ,black
<br />Sleeve Length: Long  Sleeve 
<br />Fashion, charming 
<br />5 Asian sizes available: 
<br />Asian S (US S(2) UK 2 AU 4) 
<br />Asian M (US S(4) UK 6 AU 8) 
<br />Asian  L (US M(8-10) UK 10 AU 12) 
<br />Asian XL (US L(12) UK 14 AU 16) 
<br />Asian XXL (US L(14) UK 16 AU 18)