This off-duty combination of a blue denim jacket and brown chinos is extremely easy to put together without a second thought, helping you look on-trend and prepared for anything without spending a ton of time going through your closet. And if you want to effortlessly lift up your look with a pair of shoes, complete this ensemble with a pair of dark brown suede chelsea boots. As you're moving from your 20s to your 30s, you probably want to start dressing like an adult man. That's when ensembles like this come in useful.