This is the LA Veste Cuadrada blazer from Jacquemus.

• Loose, boxy fit
• Wide structured shoulders
• Collarless neckline
• Hidden double-breasted closure
• Chest welt pocket
• Side welt pockets
• 100% Virgin wool
• Lining: 65% Viscose / 55% Cotton / 45% Polyester
• Made in Romania