Dressing down the blazer? Mix up your formalwear collection with this plain, single-breasted suit jacket from the House of Marks & Spencer. Skinny fit with notched lapels and a single-breasted offers a modern cut and streamlines your physique. Boasting of a single inside and three outer pockets. Stacked cuff buttons for a classic finishing touch. This looks like a smooth finish navy suit jacket with a cream shirt and matching flannel or tweed trousers, opting for a corporate event or a summer wedding because with separates, there are always a few things to remember.