If you're scouting for a casual but also stylish look, wear a long sleeve shirt with navy sweatpants. Here's how to play it up: dark brown leather desert boots.
Navy Sweatpants with Long Sleeve Shirt Cold Weather Outfits For Men
Why not try pairing a long sleeve shirt with navy sweatpants? As well as totally comfortable, both of these items look amazing when married together. For something more on the relaxed side to complete your outfit, complete this outfit with white athletic shoes.
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.