The Massaging Insoles are filled with glycerin which moves as you walk, thereby giving your feet a massage with every step. Plus they act as shock absorbers which help to relieve pain in your feet, knees, hips and back.
The insoles are constructed of thin, black, 100% industrial strength polyester which helps to absorb odor and perspiration. The glycerin is a nontoxic substance found in lipstick and frosting.
Massaging Insoles fit in any shoe and are recommended by people everywhere to treat all foot pain.