As you can see here, it doesn't require that much effort for a man to look casually classic. Just team a navy blazer with white chinos and you'll look incredibly stylish. If you wish to easily play down this outfit with one piece, why not slip into espadrilles?
Navy Blazer with Espadrilles Warm Weather Outfits For Men
This casual combination of a navy blazer and blue ripped jeans is a safe bet when you need to look cool and relaxed but have no extra time. Why not take a classic approach with shoes and add espadrilles to this outfit?