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. Slight medial posting redirects pressure away from the painful area. Half-inch lift removes tension from the plantar fascia to relieve pain. Superior shock-absorbing qualities reduce shock to the joints and back. Do not absorb odors nor exude oil like some heel cushions. Clean with soap and warm water. Not made with natural rubber latex.