The latest innovation from market leaders Tenga is the Premium Tenga Rolling Head Cup, a flexible onacup that promises to please. Thrust into the tight tunnel and you discover all the textures you come to expect from a Tenga toy. In this case, it's a snugly wound spiral structure. As usual, you can control the vacuum effect by covering or uncovering the air hole at the end, putting you in the driving seat of your pleasure.