On days when comfort is everything, try pairing a long sleeve shirt with blue jeans. Complement this outfit with a pair of tan brogues for an air of polish. As a 30-year-old guy, you probably want to start dressing like an adult man. If that's the case, ensembles like this are perfect as inspo.
This pairing of a long sleeve shirt and aquamarine jeans is on the casual side but is also dapper and incredibly dapper. A trendy pair of tan brogues is an effective way to bring a hint of polish to your look. And if we're talking casual dressing ideas for 30-year-old guys, this look looks nice on almost anyone.