A long sleeve shirt and brown cargo pants are absolute menswear staples if you're figuring out an off-duty wardrobe that matches up to the highest style standards. You can get a little creative in the footwear department and complement this ensemble with a pair of dark brown leather casual boots. There's no nicer way to spice up a bleak autumn day than a knockout getup like this one. This combination illustrates how to keep succeeding in the casual fashion department as an older guy.