Go for a pared down yet casual and cool option by marrying a charcoal shawl cardigan and a charcoal v-neck t-shirt.
Charcoal Shawl Cardigan with Charcoal V-neck T-shirt Warm Weather Outfits For Men
For a relaxed casual outfit, pair a charcoal shawl cardigan with a charcoal v-neck t-shirt — these pieces go nicely together.