This classic and casual pairing of a sweater vest and grey chinos is extremely easy to throw together without a second thought, helping you look seriously stylish and ready for anything without spending a ton of time combing through your closet. Dark brown leather casual boots look perfect rounding off this ensemble. Many people suppose that just because you need to get bundled up you have to sacrifice your style, but it's just not true, and this ensemble is hard proof. Combos like this go a long way towards maturing your style as a 30-something guy.