Summer is the time to flaunt your favourite open shoes. For long walks, flat or medium-heeled sandals are perfect. For the office, you can choose from a wide range of designs: jewelled flip-flops, clogs, loafers, espadrilles or pumps, with every kind of heel or wedge. For anyone who loves a glam and comfortable style, canvas trainers are essential. And for anyone who doesn't miss a beat in fashion, the true cult pieces are mules, in leather, rope or plastic.