This semi-casual combo of a blue shearling jacket and a turtleneck is super easy to pull together without a second thought, helping you look stylish and prepared for anything without spending too much time going through your wardrobe. Finishing with a pair of navy athletic shoes is a surefire way to inject a more laid-back twist into your getup. Gentlemen who are curious how to stay stylish as you reach your 40s, you have your answer.