The heel spur silicone heel pad is made of two types of silicone, one denser than the other to be able to perform a proper function in each part of the heel. the blue zone is softer, providing maximum comfort. This heel cup with cup has been designed to be used by patients with heel spurs. Provides comfort and relaxation avoiding pain in that area. The medilast podiatry range is distinguished by being made primarily of two soft materials that act effectively and provide maximum comfort: silicone gel and medical silicone. the silicone heel cup is made of medical silicone, harder than gel and used especially in products whose function is to distribute loads. 100% medical silicone.