A self-design blazer is made to exert your power with style. This men's navy blazer from the House of Marks & Spencer is a must have for every influential man out there. Smart slim cut, with notched lapels and a single-breasted, two-button fastening that won't fall off. It can take your boring trouser and shirt combination to the next level. Add a tie for a formal touch or wear it under a blazer for a retro vibe.