This pairing of a tan harrington jacket and a long sleeve t-shirt is proof that a safe off-duty ensemble doesn't have to be boring. When not sure as to what to wear in the footwear department, stick to a pair of white and red leather low top sneakers. This getup is a great idea if you're crafting an easy-to-transition outfit. Wondering how to master casual style as you make your way through your 20s? This combo is the perfect answer.