The Bathmate Hydro 7 Penis Pump is a hydrotherapy pump for maximum penis enlargement!Use this penis pump in the bath or shower and fill it with warm water. By increasing blood circulation, this penis pump will optimally enlarge your penis. If you fill it with warm water, the penis will become even larger and harder. The more you use the penis pump, the stronger, bigger and healthier your penis will become. The result is already visible after 1 session. We recommend using the penis pump a maximum of 3 times a week for a maximum of 20 minutes. The Hydro 7 penis pump is suitable for an erect penis between 13 and 18cm long.