DESCRIPTION 2mm thick 100% medical grade silicone insoles made with more than 175 dome-shaped elevations, uniformly spread to create a massaging effect while walking. Eases pressure on lower joints relieving pain from feet, metatarsal zone, heels, hips and knees. Anatomically shaped, made for left and right feet. Washable and reusable. Clean with warm water. Supplied in pairs to avoid problems caused by limb length discrepancies. Diabetics and those with poor blood circulation should seek professional advice.