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! Please remove this sticker placed on the Air Hole of the TENGA CUPs before use.
Additionally, you can control the vacuum suction of the CUP if you cover the air hole with your finger!