Putting together a grey crew-neck sweater with a dark brown long sleeve shirt is an on-point choice for a casual ensemble. A pair of brown suede casual boots finishes off this outfit very well. If you're not sure how to dress maturely while looking stylish, this outfit is a great illustration.
Dark Brown Long Sleeve Shirt with Grey Crew-neck Sweater Outfits For Men In Their 30s
If you don't like being too serious with your combinations, marry a grey crew-neck sweater with a dark brown long sleeve shirt. Take cues from getups like this if you want to add more gravitas to your wardrobe.