Why not opt for a sweatshirt and a black denim shirt? As well as totally comfortable, both items look cool worn together. A pair of black leather casual boots immediately polishes up the ensemble. As you can see here, this getup is a really good option, especially for in-between weather, when the temperatures are getting lower. Stylish and age-appropriate for a gent in his 20s, an ensemble like this will help outdo any of your fellows.