Go for a simple but at the same time casually dapper choice putting together a short sleeve shirt and grey chinos. If you wish to easily elevate this outfit with footwear, add a pair of brogues to the equation. A perfect pairing to make you a sharp-dressed gentleman in his 30s, rather than just a gentleman in his 30s.
To create a casual outfit with a modern take, wear a short sleeve shirt and white chinos. Inject this outfit with an air of class by finishing with brogues. As a 30-something gentleman, you want to start dressing more professionally. If that's the case, inspiration like this is very useful.
Consider teaming a short sleeve shirt with a navy suit to look handsome and classic. Brogues look wonderful here. Like this outfit idea for an over-30 gent?
A short sleeve shirt and charcoal wool chinos are the kind of a winning casual ensemble that you so desperately need when you have no time to spare. If you wish to easily perk up your ensemble with one single item, introduce a pair of brogues to the mix. As a guy in his thirties, you want to start dressing more maturely. If that's the case, getups like this are ideal as inspiration.
Go for a pared down but casual and cool getup by pairing a short sleeve shirt and tan shorts. Finish your look with a pair of brogues for a modern on and off-duty mix. This look is most probably what you're looking for as a gentleman in his 30s.