A dark brown suit and a short sleeve shirt are absolute mainstays if you're figuring out a smart casual wardrobe that matches up to the highest fashion standards. And if you want to instantly kick up this outfit with one piece, introduce olive suede tassel loafers to the equation. Come warm sunny days you want to feel fresh and sharp –– this getup is just what you need. So if you're looking for style ideas on what to wear well into your 40s, this combo is definitely worth saving for later.