For a casually cool ensemble, dress in a black long sleeve t-shirt and black sweatpants — these two items play well together. Make a bit more effort with shoes and add tan suede chelsea boots to your look. So as you can see, it's very easy to look awesome and stay snug when colder weather comes, all thanks to combos like this. This getup proves that in your early 20s your sartorial options are far from limited.