The Premium Dual Sensation CUP features a stimulating contrast of sensations from the opposing sides of the item, with stronger stimulation from the "Tough Side" and a gentler feeling from the "Tender Side". These, combined with adjustments and upgrades to the internal materials, provide a dynamic, new experience! The new Air-Flow Structure is further refined in the Premium edition, offering a gentle embrace through multiple air-chambers that push back on the user as they insert. Materials:  Insert Sleeve: Thermoplastic Elastomer (TPE) Casing: PE Sponge: Urethane Lubricant: Water, Glycerin, Propylene glycol, Peg-40 hydrogenated castor oil, Sodium polyacrylate, Phenoxyethanol, Cyclopentasiloxane, Hydroxyethylcellulose, Methylparaben, Hydroxypropyl cyclodextrin, Iodopropynyl butylcarbamate, Cyclotetrasiloxane" Disposable, Prelubricated Product Specifications: Size: 67 x 67 x 155mm Weight: 188g Insertion Length: 150mm Insertion Width: 45mm