This pairing of a black leather biker jacket and a black crew-neck t-shirt is proof that a safe casual getup can still be really stylish. And if you need to instantly dial down this look with a pair of shoes, complement this outfit with a pair of black leather sandals. Seeing as it's extremely hot outside, this outfit seems ideal and entirely summer-ready. Those who wonder how to pull off edgy casual style in your 20s, this combo should answer your question.