FitFlop Walkstar III A workout while you walk. These cool FitFlops have a special technology that can tone your legs and thighs. Just toss them on for your walk to work or when you're running errands. They'll help you get in shape with every step you take. # Flip-flop # Micro-wobbleboard technology gives a workout while you walk # Increases leg, calf and gluteal muscle activity to improve strength and muscle tone # Improves posture # Mimics the gait of barefoot walking with more muscle load # Cushioned for ultimate comfort # Upper: 100% synthetic # Enjoy free shipping and free returns.