1High quality smoothly organic silicone, free of bubbles and other defects. 2The mold is made of soft, strong toughness, waterproof silicone and has a deep body that contains both the ear canal and a large base area that can be mounted on a prosthetic head or similar object. 3The mold can clearly show the inner and outer structure of the ear. 4Having smoothly and delicate texture, soft feelings, authentic modeling. 5Also can be used as a necessary tool for teaching demonstration.