You're looking at the undeniable proof that a crew-neck t-shirt and grey jeans are awesome when married together in a casual street style ensemble. If you need to immediately amp up this look with one piece, why not introduce black leather casual boots to the equation? During the winter season, when warmth is prized, it can be easy to surrender to a less-than-stylish look in the name of convenience. However, this look is a vivid example that you can actually stay snug and remain stylish at the same time in the winter season.