A light blue chambray dress shirt and a red suit are absolute mainstays if you're putting together a smart wardrobe that matches up to the highest sartorial standards. You can take a more relaxed approach with footwear and opt for white canvas low top sneakers. As days are getting cooler, you'll discover that an outfit like this is ideal for this time. Rest assured this look is something you can totally wear as a 40-year-old man.