This off-duty pairing of a shirt jacket and an olive crew-neck t-shirt is super easy to put together in seconds time, helping you look awesome and prepared for anything without spending a ton of time going through your wardrobe. Dark brown leather desert boots integrate smoothly within a variety of ensembles. So as you can see here, it's a kick-ass, not to mention spring-ready, combination to keep in your transitional rotation. Wondering how to perfect casual looks as you step into your 40s? This combination is a vivid example.