This combo of a dress shirt and grey dress pants couldn't possibly come across other than incredibly stylish and sophisticated. Want to dial it down when it comes to footwear? Slip into navy and white low top sneakers for the day. Come warm summer days you want to feel fresh and sharp –– this ensemble is ideal for this time. As a guy in his 30s, you probably want to start dressing maturely. If that's the case, combinations like this are a winning option.