For effortless style without the need to sacrifice on comfort, we love this pairing of a light blue denim shirt and grey jeans. Low top sneakers are a good pick to complement this getup. Seeing as it's roasting hot outside, this getup appears perfect and entirely season-appropriate. This combo demonstrates that as a 40-something gentleman, you have a wide array of sartorial options.
You're looking at the irrefutable proof that a light blue denim shirt and white chinos look awesome when worn together in a casual outfit. When it comes to shoes, this ensemble is complemented nicely with low top sneakers. Needless to say, it's easier to work through a warm weather day in a cool look like this one. All in all, a good demonstration of relaxed casual fashion for middle-aged gentlemen.