M: Approximately 23.5 x 7.5 x 5 cm Suitable for formal wear or everyday use. The thong is made of high-quality braided cord with gold and silver threads, and the pale colors give it an elegant finish. "Uses Special Urethane Foam" Uses "ZULEN," a shock-absorbing material developed by Bridgestone. The soft feel absorbs impact continuously while walking, reducing foot fatigue from long periods of walking. "Uses Low-Rebound Cushion" Uses a shock-absorbing material developed by Bridgestone, and the soft feel absorbs impact continuously while walking, reducing foot fatigue from long periods of walking.