These slippers let you get a workout while you  are walking! Each step you take in your FitFlops™ strenghthens your core muscles, absorbs shock on your joints and back and tones the muscles in your feet, legs, buttocks, stomach and back. It helps improve muscle activity, blood circulation, balance and even posture with the trendy fitness craze all the way from the UK. This is a must buy for all women suffering from back aches!