Premium Dual Sensation Cup Stroker from Tenga Master's Craft Edition. Premium Dual Sensation Cup is a masturbator with two holes one on each end for stimulation. A tender side and a tough side. Tender side formed with gently enveloping ribs. Tough side formed to squeeze and stimulate. The two internal canals interweave for a tight squeeze and bounding sense of immersion. The new models marked as Premium differ from their predecessors by more complicated insets inside, which provides even more pleasant stimulation. The Tenga Premium Dual Sensation Cup masturbator is a product that will provide you with the highest quality experience. A network of stimulating tabs inside the sleeve. Intense sensations. Internal pressure control. Easy to maintain hygiene. Two holes for stimulation. Specifications: Size 2.64 inches in depth by 2.64 inches in height by 6.10 inches in height. Insertion length 5.80 inches by 1.77 inches insertion width. Weight 0.41 pound. Other specifications: Disposable, Prelubricated. Materials Insertion Stroker Sleeve: Thermoplastic Elastomer TPE. Casing polyethylene PE. 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 for single use on each end.