One of the coolest ways for a man to style out a grey crew-neck sweater is to wear it with grey chinos for a relaxed casual ensemble. A trendy pair of grey suede low top sneakers is a simple way to infuse an element of stylish nonchalance into this outfit. We promise this combination is the answer to all of your transitional dressing problems. Those who are curious how to rock modern casual outfits as you get into your 30s, you have your answer.