We produce insoles which made of PVC and TPU.Our massaging Insoles are performance designed to re-balance, cushion, massage and invigorate the foot with each step you take. Re-balancing the foot by distributing your body weight equally on the feet will help align the spinal column in its proper position. The constant massaging action helps to stimulate blood circulation from the heel to the toe of each foot Massaging Insoles are therapeutic, 100% glycerin filled insoles that provide cushion, increase circulation and massage your feet with every step. Absorbs shock - great for knees, hips and back. Massaging Insoles® can help considerably in the reduction of pain due to heel spurs, stone bruises and pain suffered by individuals that spend long hours standing or walking on hard surfaces massaging insoles fit in any shoe and are recommended by people everywhere to treat all foot pain