The Hydromax, sized up for bigger frames.Same water-vacuum engineering as the Hydromax 7 — bellows core, even hydraulic pressure, bath-or-shower operation — built on a wider, longer chamber for erect lengths roughly 7 to 9 inches. If the 7 would fit snug at your size, this is your chamber; a pump that's too small works against you, and Bathmate's sizing exists for a reason.Everything else carries over: polycarbonate body, soft sealing base, top-valve quick release, and the even all-around draw that air pumps can't replicate.Play it smart: gentle pressure, short sessions, instant release at any pinch or discoloration. Size up your comfort, not just your ambition.See where it ranks in our Best Penis Pumps guide.