It features a newly designed round perineum tab and also boasts a Kundalini AK Tab. The A KTab adds sensations up and down your back that are complementary to the sensations from the prostate.Mobility is a key to success with our products, and despite its size the Progasm moves inside the mans body to provide a robust prostate masssage for incredible pleasure. Largest Aneros modelRound perineum tab designKundalini K Tab provides additional sensationsHas size, but is very mobileFor advanced and experienced users