The warmer weather presents all sorts of opportunities to pull on some sneakers. Whether for more off-duty occasions or simply to sport in relaxed work environments, you'll want a pair that's simple, comfortable and easily adaptable. Which is why the canvas sneaker is the quintessential summer shoe. Wear them with everything from your jeans and cut-off shorts to relaxed chinos and even your summer wedding suits. Here are six classics, all with an undeniably retro charm.