Tenga Onacup masturbators for men have a range of different inner textures, and a vacuum seal for increased intensity. They’re also cleverly designed to look like male grooming products, keeping them really discreet for home or travel. They’re designed to be used only once, but can be used a couple of times with condoms. No lube needed, as the Onacup range has a built-in lube dispenser. Air chambers inside the Air Cushion Onacup creates a smooth sliding motion as you thrust into the masturbator. The nubs in the tube move with the pressure in the air chambers, creating strong sensations and a clinging sensation. At the rounded end of the tube, seventeen small nubs cover the whole head of your penis with a massaging action.