A navy denim jacket and black jeans are a combo that every stylish guy should have in his off-duty sartorial collection. Finishing with a pair of white canvas high top sneakers is a surefire way to bring a more laid-back vibe to your outfit. So when summer is fading away and fall is in the air, you may find this ensemble your favorite. When it comes to casual outfit ideas for young guys, this look looks great on almost any gent.