This casual combination of a multi colored crew-neck sweater and jeans is a fail-safe option when you need to look stylish in a flash. To bring out an elegant side of you, complement this outfit with beige tassel loafers. As you can see here, it's very easy to look awesome and stay snug when cooler days are here, thanks to this look. This pairing illustrates that as a 40-year-old gent, you have a wide range of dressing options.