Premium Rolling Head Cup Stroker from Tenga Master's Cup Series. Premium Rolling Head Cup is a masturbator with a unique shape. It has a movable spiral that can be bent freely. The Premium series is characterized by an even better quality of workmanship and a more complicated interior full of insets that provide a more intense experience. The pressure inside can be adjusted with the opening on the top of the product. A network of stimulating tabs inside the sleeve. Intense sensations. Internal pressure control. Easy to maintain hygiene. Flexible spiral. Materials: Insertion Sleeve: Thermoplastic Elastomer TPE. Casing Polyethylene PE. Size 2.72 inches in depth by 2.72 inches in width by 6.10 inches in height. Insertion length 5.80 inches by width 1.80 inches. Weight 0.34 pound. Other specifications: Disposable, Prelubricated. Lubricant Ring Polyurethane PU. Lubricant ingredients: Water, Glycerin, Propylene Glycol, Peg-40 Hydrogenated Castor Oil, Sodium Polyacrylate, Phenoxyethanol, Cyclopentasiloxane, Hydroxyethylcellulose, Methylparaben, Hydroxypropyl Cyclodextrin, Iodopropynyl Butylcarbamate, Cyclotetrasiloxane. Please note stroker is a single use adult toy for men.