The silicone heel cup for heel spurs is made with two types of silicone, one denser than the other to properly function in each part of the heel. The blue area is softer, providing maximum comfort. This heel cup has been designed for use by patients with heel spurs. It provides comfort and relaxation, preventing pain in that area. The Medilast podiatry range is distinguished by its primarily two soft materials that act effectively and provide maximum comfort: silicone gel and medical silicone. The silicone heel cup is made with medical silicone, which is harder than gel and is especially used in products whose function is to distribute loads. 100% medical silicone.