Try teaming a grey crew-neck t-shirt with navy jeans if you seek to look neat and relaxed without putting in too much time. Finishing with a pair of dark brown leather loafers is an effective way to add a little zing to this ensemble. When leaves change color and fall settles in, you'll appreciate how great this look is for in-between weather. This ensemble is a practical illustration 40-something gents can very well kill in the fashion department.