For an ensemble that's very simple but can be modified in a ton of different ways, team a long sleeve shirt with navy sweatpants. White leather low top sneakers will tie the whole thing together.
Navy Sweatpants with Long Sleeve Shirt Outfits For Men
To create a casual getup with a modern take, wear a long sleeve shirt with navy sweatpants. Dial up the cool of this outfit by rounding off with a pair of navy and white canvas high top sneakers.
For a surefire laid-back option, you can always rely on this pairing of a long sleeve shirt and navy sweatpants. To introduce some extra flair to your getup, add black leather casual boots to the mix.