For a cool and casual ensemble, make a brown bomber jacket and a black crew-neck t-shirt your outfit choice — these pieces play perfectly well together. Finishing off with tan suede chelsea boots is a simple way to add a bit of fanciness to this ensemble. As you can guess, this is a neat idea when spring arrives. As a gent in his thirties, you probably want to start dressing more maturely. That's when outfits like this are a surefire option.