Newly developed Aero Dial structure: control the suction by turning the dial! Adjust the dial to produce the perfect strength of vacuum suction and tightness. Personalized suction for the perfect experience. Internal Squeeze Ring: The highly elastic ring embedded in the elastomer body keeps air inside and produces enveloping pleasure. Size (D × W × H inches): 3.2 × 3.2 × 7.52 Insertion Length Approx. (inches): 5.8 Insertion Width Approx. (inches): 1.77 Weight (lbs): 0.93 Other Specs: Reusable, Sample Lubricant Included Materials: ABS / PC / POM/ Silicone/ Elastomer Lotion: HOLE LOTION [REAL] (Red) Ingredients: Water, Glycerin, Sodium Polyacrylate, Ethanol, Hydroxyethylcellulose, Phenoxyethanol, Methylparaben, EDTA-2Na, Polysorbate 80, Sorbitan Cocoate, Fragrance