This pairing of a black crew-neck t-shirt and light blue jeans is uber stylish and creates instant appeal. Complement your ensemble with a pair of low top sneakers and the whole outfit will come together. Needless to say, it's easier to work through a blazing hot day in a easy and breezy getup such as this one. This combination illustrates that as a gent in his forties, you have a wide array of sartorial options.
This getup with a light blue long sleeve shirt and light blue jeans isn't hard to put together and is easy to change. If in doubt as to what to wear when it comes to footwear, complement this look with a pair of low top sneakers. So if it's a hot warm weather afternoon and you want to look sharp without exerting much effort, this look will do the job in next to no time. As you can see here, as a mature gentleman, you have a wide range of dressing options.