A blue double breasted blazer and a long sleeve shirt are absolute must-haves if you're picking out a classy closet that matches up to the highest menswear standards. Dark brown leather double monks are a surefire way to inject an element of refinement into this look. As you can see, it's super easy to look amazing and stay comfy when chillier weather arrives, thanks to this ensemble. This combination is your answer to the question of how to dress appropriately for your age as you get into your 40s.