Pairing a white and navy vertical striped long sleeve shirt and charcoal vertical striped chinos will be indisputable proof of your expertise in men's fashion even on weekend days. Our favorite of a myriad of ways to finish this look is black leather casual boots. This one is a viable idea when it comes to picking out a well-coordinated ensemble for unpredictable fall weather. Certainly a great choice when it comes to outfit ideas for 20-something men.