The tag says size 8/9 Years, This vest runs small for children 6/7 years. See measurements in the picture.

This is a Zara Kids vest in size 9-10. The vest is made of a polyester/cotton blend and features a solid gray color with striped accents. It is sleeveless and has a classic fit with a button closure. The vest also has quilted accents and pockets. It is suitable for all sports and is part of the Zara product line.