Bathmate Hydromax X40 Original Water Pump

What the Bathmate Hydromax X40 is

The Bathmate Hydromax X40 is a water-filled pump for adult men, built as one rigid see-through chamber joined to a flexible black bellows at the base. It is a hydro pump rather than an air pump: the carton carries the Bathmate wordmark and the printed tagline Just Add Water, which is the manufacturer's own summary of how the unit is meant to be filled. The X40 is the third of four chamber sizes in the Hydromax line, and it arrives in a printed Bathmate carton with the unit assembled.

This listing sits in our Penis Pumps range, alongside the rest of our devices for men. Everything described below is taken from the packaging and from the unit in the product photographs — where the packaging is silent, we have left the detail out rather than fill the gap with a figure we cannot see.

How the unit is built

The Hydromax X40 is a two-part device with no hoses, bulbs, batteries or electronics. The upper section is a single moulded see-through cylinder closed at the top by a raised collar, which carries a small black push fitting at its centre. The photographs show the chamber in three finishes — blue, clear and red — and the carton artwork pictures all three together, so the line is produced in more than one colourway.

Running down the side of the chamber is a printed gauge panel with numbered graduations, so the chamber can be read at a glance while it is in use. A CE mark is printed on the chamber alongside the vertical HYDROMAX9 model mark and the Bathmate logo.

The base is the part that does the work. A black concertina bellows with several deep convolutions sits between two pale collar rings, and that bellows is the pumping element — there is no separate hand bulb, trigger or squeeze grip anywhere on the unit. That is a deliberate design trade-off: fewer moving parts and nothing to route around in the bath, in exchange for a device braced and worked against the body rather than operated at arm's length. It also means there is nothing to charge, nothing to replace and no seal between two components that can fail in the middle of a session.

Product specifications

Chamber dimensions, the weight of the unit and the names of the materials used in the body, bellows and internal spring are not printed on any surface visible in these photographs, so we have not listed them. The printed material supplied inside the carton is the correct reference for those figures.

Choosing between the Hydromax sizes

Bathmate publishes a sizing guide that matches each chamber to a measurement range, and the X40 sits third in that range. The guide is reproduced in this listing's gallery, and its figures are set out below exactly as printed, because picking the wrong chamber is the most common reason one of these does not suit its owner.

Read that as a fitting chart and nothing more. It tells you which chamber a given measurement sits inside comfortably; it is not a statement about what the device does or about any result from using it. If your own measurement falls near the boundary between two chambers, the guide places you in the one whose upper figure you are under.

How it is used

The Hydromax X40 is filled with water and used in the bath or the shower, which is what the carton's Just Add Water line refers to. The bellows at the base is compressed against the body to work it, and no power source, charging cable or hand bulb is involved at any point.

We have deliberately not published session timings, pressure figures or a step-by-step routine on this page. None of that is printed on any surface visible in these photographs, and guessing at numbers on a device that applies pressure to the body would be worse than leaving them out. Use the instructions supplied inside the carton as your reference, start conservatively, and stop straight away if anything is uncomfortable.

Who it is for

This is an adult product for men aged 18 and over who want a water-filled unit rather than a dry air pump, and who are comfortable using it in the bath or shower. It suits someone who would rather own a single sealed device with no hoses or electronics to fail, who does not mind working it by hand against the body, and whose measurement falls inside the X40 band on the chart above.

It is a poor fit if you want something usable dry, away from a bathroom; if you would rather not attach the product to a bath or shower routine; or if your measurement falls outside the X40 band, in which case one of the other chambers in the guide is the correct choice rather than this one. It is not suitable for anyone under 18.

Good to know

Rinse the chamber and the bellows through with warm water after each use and let the unit dry fully before it is stored, and keep it out of reach of children. Keep it as a single-person item; devices of this kind should not be shared. Store it somewhere dry and out of direct sunlight, and check the chamber and the bellows for splits, crazing or damage before each use — a cracked chamber or a split bellows is a reason to stop using the unit, not a cosmetic issue.

If you have a medical condition, a bleeding or circulatory disorder, reduced sensation, or you take prescription medication, speak to a licensed healthcare professional before using a pump of any kind. Discontinue use and seek advice if you experience pain, numbness, discolouration or swelling. The carton carries a two-year manufacturer warranty seal, so keep your proof of purchase in case you ever need to make a claim against it.

Frequently Asked Questions

Does the Bathmate Hydromax X40 use water or air?

It uses water. The Bathmate carton is printed with the tagline Just Add Water, and the unit is designed to be filled and used in the bath or the shower rather than dry. There is no hand bulb, hose or air fitting anywhere on the device.

Which Hydromax chamber size should I choose?

The X40 is matched by Bathmate's own sizing guide to a current length of up to 8.0 inches and a current width of up to 2 1/4 inches. The same guide places the X20 at up to 5.0 inches, the X30 at up to 7.0 inches and the X50 at up to 9.0 inches, so measure first and pick the chamber whose upper figure you fall under.

Does it need batteries or charging?

No. The Hydromax X40 has no motor, no battery compartment and no charging port. The concertina bellows at the base is compressed by hand against the body, so the unit works entirely without a power source and there is nothing to recharge between uses.

Is it covered by a warranty?

Yes — the carton carries a printed two-year manufacturer warranty seal. Keep your proof of purchase and the paperwork supplied in the carton, since a warranty claim on a device of this kind normally needs both.

Where do I find the exact dimensions and materials?

They are in the printed material inside the carton. The chamber's dimensions, its weight and the names of the materials used in the body, bellows and spring are not printed on any surface shown in these product photographs, so we have published no figures for them here rather than repeat numbers we cannot verify.

How will my order be packaged?

Orders ship in plain outer packaging with no product imagery, brand marks or descriptive wording on the outside. Your card statement is discreet too — it will not show the Gear Isle name.

Product information compiled and reviewed by the Gear Isle product team. We transcribe product specifications directly from manufacturer packaging. Found an error? Tell us.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Adult novelty device for adults 18 and over. Consult a licensed healthcare professional before use, especially if you have a medical condition. Keep out of reach of children.