A grey waistcoat and jeans are the perfect way to introduce extra refinement into your daily fashion mix. Finishing with a pair of dark brown leather brogue boots is the most effective way to infuse a touch of stylish effortlessness into this ensemble. Embracing the cold will be super easy with such combinations as your fashion inspiration. Those who are curious how to pull off smart casual looks as you go through your 20s, you have your answer.