If you're on the hunt for an off-duty but also seriously stylish getup, consider wearing a black sweater vest and navy jeans. Brown suede loafers are a fail-safe way to breathe a hint of elegance into this outfit. Keep this combo in mind when spring comes, and we promise you'll save time planning an outfit on more than one morning. Men who are curious how to sport cool casual outfits after 30, this combination should answer your question.