A beige shirt jacket and olive jeans are a combination that every stylish man should have in his wardrobe. Dial down the dressiness of your getup by rounding off with a pair of white and blue leather high top sneakers. So if you're on the hunt for an outfit that's seriously stylish but also feels entirely spring-appropriate, look no further. Those who wonder how to pull off cool casual dressing as you drift through your 20s, this getup should answer your question.