Maintain a firm grip and control the speed and tightness of your strokes The dual-density design is soft inside the tunnel and firm on the outside, but still pliable enough that you can squeeze your shaft. The ribbed internal texture provides intense stimulation, with a hole at the end that allows you to control suction and airflow. This masturbation tool is also great for use with a partner because it creates unique pleasure sensations that will elevate your experience. Made of stretchy silicone, the Ultra Grip Silicone Masturbator is non-porous and phthalate-free. Not compatible with silicone lubricants. Measurements: 5 inches in length, 2 inches in diameter. Material: Silicone. Color: White.