If you're looking for a casual yet sharp getup, go for a grey long sleeve t-shirt and dark green chinos. For a fashionable hi-low mix, throw athletic shoes into the mix.
Grey Long Sleeve T-Shirt with Athletic Shoes Casual Cold Weather Outfits For Men
Marry a grey long sleeve t-shirt with white chinos for both on-trend and easy-to-achieve look. Make this ensemble more practical by finishing off with a pair of athletic shoes.