Why not try teaming a cardigan with a grey crew-neck t-shirt? Both of these items are very functional and will look cool when paired together.
Grey Crew-neck T-shirt with Cardigan Casual Warm Weather Outfits For Men
Make a cardigan and a grey crew-neck t-shirt your outfit choice for a hassle-free look that's also put together.
The styling capabilities of a cardigan and a grey crew-neck t-shirt ensure you'll always have them on constant rotation in your wardrobe. The whole outfit comes together quite nicely if you complement your ensemble with a pair of brown leather boat shoes.