If you don't take fashion lightly, go for a casually stylish getup in an olive overcoat and a brown crew-neck sweater. Switch up this outfit with a more relaxed kind of shoes, like these dark brown suede casual boots. Keep this look in your head come warmer days, and rest assured, you'll save a ton of time getting dressed on more than one occasion. As you head into your 30s, you want to start dressing like a grown man. That's when combinations like this are a real life saver.