Source google image: https://cdnb.lystit.com/1200/630/tr/photos/90e6-2014/03/25/brooks-brothers-blue-country-club-double-breasted-navy-blazer-product-1-18674136-0-686450705-normal.jpeg
Mens blazer size chart
Source google image: https://cdnb.lystit.com/1200/630/tr/photos/90e6-2014/03/25/brooks-brothers-blue-country-club-double-breasted-navy-blazer-product-1-18674136-0-686450705-normal.jpeg