Introducing the new Tenga Aero Cobalt Ring! TENGA is proud to launch our all new Aero series of self-pleasuring male masturbator sleeves. They all feature an all new suction technology that allow you to dial its suction & pressure stimulation up or down. By simply twisting the external housing choose between 10 different settings of sucking pleasure. The dial rotates clockwise to increase the suction, while turning it in the opposite direction will lower it back down. The Tenga Aero Cobalt Ringhas an inner sleeve texture that features a design with micro suction cup texture for a increased sensation of pulling and sucking.