Hydromax X30 Crystal Clear. In Crystal Clear, this Hydromax X30 gives the user a front seat when it comes to the action. This hydrotherapy penis pump uses water to dilate the blood vessels for a healthier penis and a more impressive erection. This penis pump assists in increasing girth and length. It is designed to be used on a regular basis and the vacuum tube gives a great grip for more control. This penis pump features a full support comfort ring that reduces pressure. This means a great fit around the base and testicles. This pump is a step up from the Hercules and will quickly become a favourite in his everyday health and hygiene routine.