A grey suit and a black crew-neck t-shirt are among the fundamental elements in any man's great closet. Complement this outfit with a pair of white low top sneakers to instantly ramp up the style factor of this ensemble. Keep this combo in your front hall wardrobe when spring sets it, and we guarantee you'll save time getting dressed on more than one occasion. All in all, a perfect example of smart casual fashion for 30-something Millennial gents.