A red turtleneck and jeans are a cool combination to carry you throughout the day and into the night. A pair of dark brown leather brogue boots immediately levels up the look. Outfits like this have a sophisticated air that suit gents in their forties very well.
For something on the casually cool end, test drive this combination of a red turtleneck and jeans. For something more on the classier side to complete your outfit, throw burgundy leather chelsea boots into the mix. This getup proves that cracking the fashion code as you step into your 40s is not that daunting a task.