SIZE CHART:L, length 28.3cm, width 8.7cm, thickness 0.15cm, bulge thickness 0.6cmS, length 26.3cm, width 8.5cm, thickness 0.15cm, bulge thickness 0.6cmCOLOR CHARTblacktransparentbluebrown leatherEight Strategically placed Magnets and raised nodes stimulate reflexology points foot massage shoe inserts for ball of foot pain.Help Increase blood circulation to the feet and provide soothing pain relief.The reflexology magnetic inserts massages your feet all the time by stimulating the soles of the feet. Relieve body pain and tension. Weaken fat cells in the body. Walk through the magnetic insole to lose weight.The shock-absorbing magnet technology is designed to massage your feet by stimulating the reflection points. The raised area of the foot massage insole provides arch support.