If you're looking for a laid-back yet sharp look, consider teaming an orange sweatshirt with a crew-neck t-shirt. To introduce an extra dimension to this outfit, complete this ensemble with a pair of black leather chelsea boots. If you're wondering how you should dress as a gent in his 30s, this combination gives a good idea.
This combination of an orange sweatshirt and a crew-neck t-shirt is on the casual side but will guarantee that you look sharp and seriously dapper. And if you need to easily perk up your getup with a pair of shoes, why not add a pair of black leather loafers? A look like this will make any gent in his thirties look better than everyone else in the room.