Such items as an olive shirt jacket and brown corduroy chinos are an easy way to introduce some manly sophistication into your casual styling rotation. A trendy pair of black slip-on sneakers is a simple way to punch up your look. If it's one of those gloomy autumn afternoons, what better to brighten it up than a on-trend outfit like this one? So if you're after style inspiration for dressing in your 30s, this pairing is a great example.