Size labelled 12-13Y unisex teens or may fit petite women XS upto a UK 6-8. 

Please check your sizing with these measurements: chest pit-pit 44 cm or 17.5 inches. 

Length 63 cms or 25 inches.

Excellent condition, as good as new.

I've listed similar Adidas jackets available in various colours as shown in the last photo, combined orders welcome.