If you’re looking for a shoe that is likely to keep your feet from overheating, a canvas shoe might do the trick. The white versions of these types of shoes are especially well suited for summer, since white reflects the sun’s ray, rather than absorb them like a darker colored shoe would. The fact that they are made of canvas gives them a casual look. As with any white shoe, you may find these to be hard to keep clean.
I like the classic look of these Keds:
Mens white canvas shoes pictured: Keds Men’s Champion Slip-On – Canvas