A long sleeve shirt and cargo pants are the kind of a no-brainer casual outfit that you so desperately need when you have no time to spare. Add grey athletic shoes to the equation to mix things up. So if it's a super hot summer day and you want to look on-trend without putting in too much work, this ensemble will do the job in seconds time. Wondering how to nail casual outfits as you move into your 50s? This combo is a practical illustration.