Improve step balance and foot strength Anti-skidding,shock-absorbing and depressurizing. Reduce the damage to the foot due to vibration. And also raise your height without notice by others Applicable for all kinds of sport shoes, hiking shoes and working shoes. Material: Silicone Color: Send by random Type: For women Size:(LXWXH: approx. -10X5.8X1.1cm/3.93"X2.28"X0.43" Package included: 1 pair X Silicone Heel Cup