Such staples as a blue crew-neck t-shirt and navy jeans are the perfect way to infuse some cool into your off-duty rotation. Complement this ensemble with a pair of white and black leather low top sneakers and ta-da: the outfit is complete. When leaves turn yellow and red and autumn is in full swing, you'll love this look as your go-to for in-between weather. This outfit proves that as a 40-year-old guy, you have a wide range of sartorial options.