It features a newly designed round perineum tab and also boasts a Kundalini K Tab. The  K Tab 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 massage for incredible pleasure.   Largest Aneros model Round perineum tab design Kundalini K Tab provides additional sensations Has size, but is very mobile For advanced and experienced users