Aroselove - Dragon Suction Trainer Male Cup ¢òDescription The inner sleeve of this product is made of soft silicone material. We recommend using water based lubricants with this toy. It is important to avoid using oil based lubricants. including massage oils. as they can damage the material. Unlike other products. this product is primarily designed as a trainer to enhance sensitivity. When used for masturbation. the internal contacts provide stimulation to the genitals. resulting in a delayed