A blue sweatshirt and a crew-neck t-shirt paired together are a sartorial dream for gents who appreciate laid-back styles. Let your styling credentials truly shine by rounding off your outfit with white canvas low top sneakers. As you can see, it's very easy to look amazing and stay comfortable when chillier weather comes, thanks to this ensemble. This combination proves that slipping into your 30s is no reason to stop dressing casually.