Fashionable and practical, this relaxed pairing of a brown shearling jacket and light blue jeans will provide you with endless styling opportunities. Introduce a pair of white and blue leather low top sneakers to this outfit to add a dash of stylish casualness to your outfit. In winter, when warmth is top priority, it can be easy to surrender to a less-than-stylish getup. However, this getup is a vivid example that you can actually stay cozy and remain stylish at the same time in winter. And if we're talking casual fashion tips for 30-something gentlemen, this combo looks great on almost any gentleman.