Constant Foot Massage While You Walk Due To The Unique Flow Pattern That Goes Through Your Entire Foot. Absorbs Pressure With Each Step That You Take. No More Swollen Foot And Poor Standing Posture. Glycerine Is The Primary Liquid Agent Used For Massaging Your Feet Due To Its Thermal Properties. The Technology Keeps Your Feet Warm And Circulates Your Blood Flow To Reduce Stress And Tension Around Your Foot. These Massaging Insoles Are Ideal For Reducing Effects Of Plantar Fasciitis, Heel Spurs, Fibromyalgia, Arthritis, Bunions, Calluses, Corns, Morton's Neuroma, General Foot And Ankle Pain. Made From Durable Urethane And Are Filled With A Non-Toxic Glycerin Gel. Odor-Resistant. Great For People Standing On Their Feet All Day, Perfect For Nurses, Runners, Teachers, Maternity, Cycling, Walking, Workout, Hiking, Flight Travel, And Ect.