The combination of a white crew-neck t-shirt and beige chinos makes for a kick-ass casual ensemble. Not sure how to round off this outfit? Finish off with brown leather chelsea boots to dress it up. So if it's a roasting hot warm weather afternoon and you want to look seriously stylish without exerting much effort, this outfit will do the job in next to no time. As a 30-something guy, you want to start dressing more maturely. In this case, inspiration like this proves very useful.