Curved soles of shoes make the wearer is always in a state of flux, to keep balance, the wearer needs to constantly adjust the foot muscles and bones to conduct a comprehensive balance and support throughout, exercise the leg muscles effectively, consumes extra fat, keeping a straight body posture, at the same time, can also be located on the center of the sole shores of soles for massage, Promoted foot blood circulation, to ensure a healthy body. Easy to use, convenient, suitable for all people to wear and use.