If you measure between 7 and 9 inches when erect, Hydromax9 will help you improve your erection quality and personal confidence. Ideal for those who’ve outgrown other Bathmate models, this penis pump creates real, lasting improvements. deal for larger users, the Bathmate Hydromax9 fits those with erection sizes between 7 and 9 inches, with regular use creating harder, longer-lasting erections, helping to significantly boost confidence. Overall, we’ve seen an incredible 92% satisfaction rate with our Hydromax pumps, with 80% of users reporting noticeably better erections following the first month of use*