A black v-neck sweater and a white long sleeve shirt are among the crucial elements in any guy's functional off-duty sartorial collection. If you're hesitant about how to finish off, complete your look with black leather casual boots. A cool outfit that will take you from summer to fall like this one makes it extremely easy to embrace the new season. Those wondering how to rock edgy casual dressing as you move through your 20s, this outfit should answer your question.