Guys, you can keep it cool, casual and stylish with Prada’s suede slip-ons for men ($450). Prada has made a sophisticated slip-on that is updated with an espadrille and bi-colored sole. There are three colors to choose from: red, (pictured) blue, or stone. We like all three colors, but the red is probably our favorite. Pair the red slip-ons with white or navy shorts for an especially chic look.