This casual combination of a grey sweatshirt and jeans is extremely easy to put together in no time flat, helping you look seriously stylish and prepared for anything without spending too much time combing through your wardrobe. Black leather ankle boots are a fail-safe way to bring a hint of class to this getup. You might be thinking that just because winter is colder you have to sacrifice good style, but that's just not true, and this look is proof.