Product Detail: . 100% Made in Japan. Double Hole with Standard Gel. Air-Vaccum Function to Reduce Men’s Tension. The Ultimate Suction Experience. Free 5x5g Body Gel Double the fun with TENGA’s revolutionary Double Hole masturbator! The 2 holes have different cushions within for your pleasure – one super tight and one gently clinging. Each will give you different sensations and lead you to wholly different climaxes! These revolutionary Onacups, named after ‘onanism’, which is another name for masturbation, are Japan’s number 1 male sex toy. The cushions of the TENGA Double Hole Onacup come with lubricant. It gets kept in a lotion reservoir where it keeps the point of insertion in a wet state. The internal canals have a diameter of 0.5 inches and a length of 5.5 inches. Each passage has a number of different nubs which give different sensations depend on which orifice is entered. The tight, or ‘Bitter Side’ has 63 nubs that firmly tighten around the penis. The gentle ‘Sweet Side’ has 73 nubs which cling to the penis. They are reversible to give a superb sense of adhesion as you pull out. Although designed for solo use, using both sides at the same time could transport you to a ‘virtual threesome’ for extra fun!