Spring is here (for most of North America, anyway) and that means it is time to break out the sandals. Plastic flip-flops are easy, but they don't look particularly fashionable, nor do they set you apart from the crowd. Old Navy has some charming slip on sandals for ladies: espadrille slides, mules, and some strappy, shiny numbers. Guys should try these imitation Birkenstocks, or an upscale leather flip-flop. All are under $25, with only $5 shipping on the whole order.