Why not try teaming a brown harrington jacket with a beige turtleneck? These items are very functional and look great when worn together. You could take a more classic route in the footwear department by rocking a pair of black leather loafers. Rest assured, this combo will keep you toasty as well as looking seriously stylish in this transeasonal weather. This pairing proves that as a 30-something Millennial guy, you have a wide range of sartorial options.