Tenga’s Onacups are male masturbators with different inner designs and a vacuum seal option to heighten sensation. Built-in lubrication and the cunning exterior ‘just a deodorant’ look have made these male masturbators extremely popular. Onacups are designed for just one use, but if you use a condom then your Onacup will last for a few uses. The Onacup Rolling Head has an innovative accordion design at the centre of the tube to make it flexible. This allows the tip of the cup to be rolled or pushed to one side or another during masturbation, with very different arousing sensations. We particularly recommend the Rolling Head Tenga Onacup for men with very curved erections, who may find straight tube masturbators uncomfortable. This is a medium textured Onacup, and is recommended for guys who are not too sensitive. You can add to the intensity of feeling by covering or uncovering the air hole to change air pressure inside the tube.