Putting together a blue suit with a long sleeve shirt is an on-point choice for a dapper and elegant outfit. If you wish to effortlessly play down your look with footwear, complete your getup with a pair of black leather sandals. Seeing as it's boiling hot outside, this combination seems ideal and entirely season-appropriate. Laid-back outfits for 30-something men aren't actually that hard, as you can see here.