Banana Republic Captain Blazer. Black Sz 4. Master of every day, take charge with the sharp shoulders, nipped-in waist, and a double-breasted cut of this expertly tailored blazer, finished with gold crest buttons. Crafted in an exquisitely soft wool-blend fabric designed for all-season appeal. SUSTAINABILITY: Made with a mix of recycled polyester. Peak lapel. Double-breasted button front. Front pockets. Single vent at back. Fully lined.