Colour Block Knitted Sweater

Super cute colour block navy blue and white knitted sweater. Brooks Brothers "346" brand. 55% linen, 45% cotton. In perfect vintage/used condition, please see photos. I believe this is men's sizing because of the brand, but it could be women’s. Brook’s Brothers does have a women’s sizing line, but I am just not sure. Need measurements? Have a question? Feel free to ask before ordering!