![Navy Suit with Crew-neck T-shirt Smart Casual Chill Weather Outfits In Their 30s: This combo of a navy suit and a crew-neck t-shirt is the perfect base for a casually classic look. Spice up your outfit by finishing with a pair of navy suede low top sneakers. In your thirties, you probably want to start dressing more like a mature gentleman. If that's the case, getups like this are perfect as inspiration.](https://cdn.lookastic.com/looks/duffle-coat-suit-crew-neck-sweater-large-27844.jpg)
![Camel Duffle Coat](https://cdn.lookastic.com/camel-duffle-coat-original-3369993.jpg)
![Navy Vertical Striped Suit](https://cdn.lookastic.com/navy-vertical-striped-suit-original-9757425.jpg)
![Tan Crew-neck Sweater](https://cdn.lookastic.com/tan-crew-neck-sweater-original-401472.jpg)
![White Crew-neck T-shirt](https://cdn.lookastic.com/white-crew-neck-t-shirt-original-386478.jpg)
![Navy Suede Low Top Sneakers](https://cdn.lookastic.com/navy-suede-low-top-sneakers-original-541098.jpg)
![Brown Socks](https://cdn.lookastic.com/brown-socks-original-605574.jpg)
This combo of a navy suit and a crew-neck t-shirt is the perfect base for a casually classic look. Spice up your outfit by finishing with a pair of navy suede low top sneakers. In your thirties, you probably want to start dressing more like a mature gentleman. If that's the case, getups like this are perfect as inspiration.