This laid-back combination of a blue shirt jacket and jeans is super easy to pull together in no time, helping you look awesome and ready for anything without spending too much time digging through your wardrobe. And if you want to easily dial up this ensemble with one piece, add a pair of dark green loafers. So as you can see, this combination is a really savvy idea, especially for weird transition weather, when the temperatures are getting lower. Looking for style tips for gents over 30? This ensemble is definitely worth saving to your favorites.