This casual combo of a long sleeve shirt and charcoal sweatpants is very easy to pull together in no time flat, helping you look amazing and prepared for anything without spending a ton of time going through your wardrobe. Finishing off with grey athletic shoes is a surefire way to infuse an element of stylish nonchalance into your ensemble. Gents who wonder how to dress well as you slip into your 40s, you have your answer.