Uses: Within seconds, chills entire foot to relieve: sore feet, hot feet, tired feet, aching feet, & painful chronic conditions like plantar fasciitis and arthritis. Useful during chemotherapy. Immediate Relief: from inflammation & swelling from sprains or strains of the arch, ball-of-foot, heel, neuropathy, or any foot injury. Ideal for people who are on their feet all day. How it Works: Neutralizes pain & wear and tear with a chilled gel pack beneath the length of the foot, & another half-size pack for top of foot or behind heel.