Tengas Double-Hole Cup Is A Revolutionary Disposable Male Masturbator Suction Stroker That Combines The Latest Engineering Advancements With Quality Craftsmanship To Provide Unprecedented Sensation. Within The Interior Of Our Male Masturbator Stroker, Two Canals Interweave For A Tight Squeeze And A Bounding Sense Of Immersion. The Sweet Side Of Our Male Stroking Masturbator Cup Gently Envelops, While The Bitter Side Squeezes And Stimulates. Use The Two Sides Of Our Mens Masturbator Separately To Savor The Difference Or At The Same Time To Enjoy The Dynamic Difference. U.S. Stands For Ultra Size - The U.S. Tenga Is Larger Than The Standard Tenga Cups. While They Do Allow For Those Up To 18Cm To Insert Fully (Compared To The Standard 15Cm), The U.S. Tenga Also Offers Much Stronger Suction Than The Standard Cup, Regardless Of The Users Size.