A long sleeve t-shirt and olive cargo pants are a great pairing worth having in your daily casual fashion mix. Introduce desert boots to your outfit for an instant style lift. Piecing together a well-coordinated combination can be challenging on its own. Enter subzero temps into the equation, and the whole thing becomes even more difficult. Don't despair, this here is your winter inspo. When it comes to casual dressing ideas for 30-something men, this combo looks cool on most men.