Clinically proven to be 95% effective for the initial treatment of heel pain (plantar fasciitis). Noncompressible, viscoelastic silicone heel cushions have a softer zone correctly placed for additional cushioning where heel pain originates. Medical-grade silicone provides superior comfort and long-lasting effectiveness. Half-inch lift removes tension from the plantar fascia to relieve pain. Not made with natural rubber latex. Sold in pairs.