A white print crew-neck t-shirt and red sweatpants are both versatile menswear essentials that will integrate brilliantly within your off-duty rotation. Add a pair of white and blue athletic shoes and ta-da: the getup is complete. This ensemble is also perfect if you're looking for summertime wear to make a tedious day more tolerable. Men who wonder how to rock cool off-duty outfits in your thirties, this combination should answer your question.