Bathmate, Bathmate diary, Penis pumps, Reviews,

Review of the Bathmate Hydromax 7 / x35 (2 month test)

Bathmate Hydromax 7 x35 Penis Pump

No matter how big one’s penis is it seems… one will always want more. Does the Bathmate Hydromax provide this? We took two months to find out!

First impressions of the Bathmate Hydromax 7

I bought the Bathmate Hydromax 7 myself. This page still contains affiliation links. If you choose to buy a pump with one of my links it helps us fund our website, because affiliation is the only way we earn money 😉

The Bathmate arrived in plain packaging. So thankfully there were no obvious signs of there being a penis pump inside the box. I bought a clear colour Hydromax 7 with the Bathmate shower strap. I opted for the transparent pump because I wanted to be able to see the colour of my penis as I was pumping. This makes it easier to spot penis bruising or red spots that are sometimes a problem with devices like this. Later on I was very happy I decided to go with the transparent pump.

The device feels very robust and I think it would be difficult to break accidentally. The Hydromax comes with an instruction manual that you definitely need to take the time to read to avoid injuring your penis.

Along the side of the device they have put a measuring tape sticker on the cylinder. Don’t rely on this sticker for length, I will explain why further down. The shower strap attaches very easily to the Hydromax. It just fits around the end and the strap is held around your neck.

Another quick note, you need to use the calculator on Bathmate’s website to figure out which size pump to buy. It’s very important so make sure you enter accurate measurements. Here is a guide to the pump sizes available for the Hydromax, illustrated by carrots. Each pump size is a different price and the size relates to your erect length. You need to buy the pump that corresponds with your size.

At the time of writing the prices range from $129 – $199 (smallest to largest). £79 – £129 in the UK.
€109 – €149 in Europe. Please note that the smallest pump doesn’t seem to be available in Europe yet (the Hydromax3, up to 3 inches).

This review is of the 5 – 7 inch version of the pump. However you can read this for every other size too, they are all the same model. There is an extra wide model of the Hydromax7 that accommodates 6.5 inches of girth. Again, you should only buy the size that corresponds to you.

Shop Bathmate Hydromax

Shop Bathmate Hydromax – UK

Shop Bathmate Hydromax – USA

Shop Bathmate Hydromax – EU

Shop Bathmate Hydromax – Australia

Shop Bathmate Hydromax – Canada

Shop Bathmate Hydromax – France

Experience using the Bathmate Hydromax 7

The Bathmate works quite smoothly in the bath. However in the shower it’s a little more tricky to get started (as you will see). Fear not though, it does get better. I outline in this section the highs and lows of my experience using the Bathmate.

Bathmate Hydromax 7 x35 Penis Pompe

The size feels right

Before you buy a Bathmate, you have to consider your current size and buy the corresponding pump. I didn’t really think too much of this and thought it was more a disadvantage than advantage. After all… why buy a pump that is exactly the right size when there are rivals who make big one-size-fits-all pumps? However upon using the Bathmate, I can tell you it feels nicer to have a pump that is the correct size. Firstly, a penis will ‘look’ bigger inside a smaller pump than a larger one. Secondly for me the smaller size of the pump feels more manageable than bigger pumps I’ve tried. Thirdly, I found it easier to see progress with the Bathmate because it’s easier to see small changes in a pump this size than in a huge pump.

You need to shave to use bathmate
You need to shave around your Penis to use Bathmate penis pumps

I had to shave my pubic area completely before the Bathmate would finally seal against my skin. This is a major let down for me because I don’t really like the bald pubic area look. So just for you to be aware, this is a necessity especially if you’re using your Bathmate in the shower. In the Bath you may get away with slight ‘stubble’ but in the shower that isn’t possible.

Bathmate Hydromax 7 x35 Comfort Pad Penis Pump
The comfort pad doesn’t work well

For me the comfort pad prevents the Bathmate from sealing a vacuum, even when I am completely shaved. I did get the device to seal a few times, however it fails so much with the comfort pad on that it just isn’t possible to use it… not unless I want to spend over an hour in the shower.

One way around this as one of our readers kindly pointed out in a comment to this article, is to use Vaseline. Using Vaseline indeed works well. However this obviously means more cleanup time and the use of Vaseline is not recommended by Bathmate.

Bathmate shower strap is useless
The shower strap isn’t very useful

I bought the shower strap in preparation for using the Bathmate in the shower. The company and many people who have written about the penis pump don’t usually say that it is more difficult to use the Hydromax in the shower. It is more difficult. The pump has clearly designed to be used in a bath and while it can be used in the shower, it isn’t as easy. Personally I have to keep at least one hand holding the pump to prevent it from unsealing from my skin. Using the shower strap doesn’t make using the Hydromax in the shower easier for me.

Update 29/4/2020 –

Bathmate recently sent me an updated shower strap and it works much better than when I wrote about it here. It still doesn’t make using the pump in the shower as comfortable as in the bath, however at least now I can tolerate it.

Bathmate Hydromax 7 x35 Penis Pump
The measuring sticker on the penis pump is inaccurate

The design of the Bathmate Hydromax means that you are compressing a softer silicone material against your body. It expands and compresses, depending on how hard you are pressing down on it and how far it has been pumped. Therefore, the measuring sticker means nothing. Because if the length of the pump itself is changing every time you use it, so is the length of the ruler.

This is a dangerous way to encourage people to measure their penises in my opinion. It would be far better to develop an actual pressure gauge on the pump. For now there are no companies making gauges inside water pumps, however at least you can peel off the sticker showing the ruler from your Bathmate.

As a work around, you should use a tape measure or ruler while using the Bathmate. They actually sell an external ruler to use with your Bathmate here. This will ensure that you are getting an accurate reading of length. More importantly it means you can control the length you pump to as well. Measure your fully erect penis and deduct half an inch from the measurement. Typically, you should never pump over half an inch below your usual erection size. After all, you are looking at your penis through water and it may be magnified, meaning you have already reached your size when it looks like you haven’t. If you pump more than this, you will risk injury.

You can break your penis using a penis pump
Be careful not to break your cock with the Bathmate Hydromax

This isn’t necessarily negativity. I want you to leave this review being well informed. The Bathmate Hydromax is a powerful penis pump. As they advertise, the Hydromax has 35% more power than the original. You need to really assess whether you want that extra power on your penis. Your penis isn’t designed to be pumped, therefore you should inform yourself on safe pressure levels. Personally I would have also been happy with the cheaper and less powerful Bathmate pump.

With traditional air pumps, most people recommend never using a pressure above 5hg / 0.17 bar on your penis.

The Bathmate Hydromax can reach a maximum pressure level of 12hg / 0.4 bar. That is a huge amount of pressure for a pump with no gauge inside it. However also know that Bathmate claim that 12hg of pressure is safe to use inside a water pump because the nature of the vacuum is more stable. In an air pump, using 12hg wouldn’t be advisable whereas in a water pump, it may be able to be used. I have not found an independent study proving that 12hg of pressure is safe to use inside a water pump. If you know of a study, please send it to me.

Bathmate penis sensitivity
Your penis will feel too sensitive after using the Bathmate sometimes

After pumping with the Bathmate, my penis would usually feel more sensitive afterwards. Sometimes the sensitivity prevented me from wanting to have sex because it would cause a small amount of pain. This wasn’t every time I used the pump but it happened.

Happy penis carrot
When you get used to it, using the pressure of the Bathmate feels nice

Yes, finally a positive! It’s true… when I got used to the pressure it felt great. You should never be in pain while using the device so if you ever do feel pain, you’re overdoing it. For me the feeling is always quite nice.

Penis size in carrots

Over half of Hydromax users report size gains

OK so this image is a huge exaggeration of what you should expect 😉 After using the pump it’s definitely a nice thing to look at your penis and think “hey it’s bigger”. Your penis may feel a little plumper and can remain like that for a temporary period of time. It depends on how much you pumped as to how long it will last. As already stated, you should never overdo it to avoid injury.

” Patients report ‘increases in overall size in terms of length and girth by their measurements’ ” – Dr James Barada

The pump works. It works more slowly than I’d like but it works. The gains aren’t permanent but I will continue to get progressively bigger as I use the pump. Some claim that penis length and thickness gains are permanent but from a lot of actual user accounts and my own test, I have learned this isn’t the case. If I want to keep my gains, I have to keep using the pump.

Bathmate customer service
Bathmate customer service is great

Seriously, they are great. I had several questions which they took the time to answer the next day. They also offer a 60 day, no questions asked money back guarantee, which is really cool. Just make sure you buy the pump from the official website to be covered by the warranty.

Please also read this article on the downsides of using water-based penis pumps

Shop Bathmate Hydromax

Shop Bathmate Hydromax – UK

Shop Bathmate Hydromax – USA

Shop Bathmate Hydromax – EU

Shop Bathmate Hydromax – Australia

Shop Bathmate Hydromax – Canada

Shop Bathmate Hydromax – France

My gains with the Bathmate Hydromax (2 month diary)

“After 2 months, 81% reported better erections or larger penises” – A Bathmate Survey

While using the Bathmate Hydromax I kept a detailed diary for 2 months to test the claim above. The diary contains information on how long I used the Bathmate, how many times and what size changes I had over time.

Additionally, I also tested what happens after I discontinue use of the pump for 1.5 months.

To summarise, the length changes were not permanent for me. However the girth gains at least partially stayed. I knew this because condoms that used to fit me no longer did.

For those who want all the detail follow our blog post links below:

Cleaning the Bathmate Hydromax

Cleaning the Bathmate Hydromax 7 is very easy. You can just swill it out with water and spray some sex toy cleaner inside. The water marks on the inside are a bit harder to get to and clean if you are obsessive like that… but honestly I don’t care.


The Bathmate really does work. It makes my penis bigger and thicker. However it takes too much time for me and using it in the shower is impractical. I don’t like spending so much time in the shower. The pump doesn’t have a gauge which is something I would like to have to reduce the risk of injury. For me personally the design also doesn’t seal easily enough on the skin, especially in the shower.

I’m looking forward to using the pump again in the future when I have more time to dedicate to it. I will be sure to update you when I do more testing with the Bathmate.

If you want to read a detailed comparison between the Hydromax and Bathmate’s more expensive model the HydroXtreme, you can read that here. The full review on the Bathmate HydroXtreme is here.

Shop Bathmate Hydromax

Shop Bathmate Hydromax – UK

Shop Bathmate Hydromax – USA

Shop Bathmate Hydromax – EU

Shop Bathmate Hydromax – Australia

Shop Bathmate Hydromax – Canada

Shop Bathmate Hydromax – France


7 / 10 Review
Material and design6
Desire to use again in the future7


You should buy the Hydromax 7 and all other penis pumps by Bathmate from their official websites, a list of which you can find below. DO NOT buy the pumps from unofficial websites, because there are a lot of rip-offs around. Plus, if you buy your pump from the official website you get a 60 day money back guarantee, which is pretty damn cool in my opinion.

The prices below are for the Hyrdromax 7 pump because that is what I reviewed on this page. For other sizes of the same pump, the price changes slightly and is listed below. Please note that these are the prices at the time of writing so it’s possible that they’ll change by the time you read this.

Bathmate shop

£99 – UK BM Hydromax Shop
$159 – USA BM Hydromax Shop
European flag €119 – EU BM Hydromax Shop
french flag €119 – FR BM Hydromax Shop
Australian flag $225 – AU BM Hydromax Shop
$160 – CA BM Hydromax Shop


Other pump sizes and prices (sterling, USD and EUR):

Hydromax3 (up to 3 inches) – £79, $129

Hydromax5 (up to 5 inches) – £89, $139, €109

Hydromax7 Wide (5 – 7 inches extra wide) – £115, $179, €139

Hydromax9 (7 – 9 inches) – £129, $199, €149


This page contains affiliate links and if you use them I will get a small commission from Bathmate which helps me keep writing articles for you on this website. Running a website such as this one takes a lot of time and money and affiliation is the only way we make money (we dislike the idea of advertisements). So if you use our affiliate links, it really helps us!

The statements and opinions expressed herein are not made by and should not be attributed to DX Products. The statements and opinions expressed herein are those of the authors alone.



Hi, I'm a sex blogger from the UK and live in France. My sex toy reviews and other articles are created to inspire and inform you. Hopefully I succeed :)



Just a note about public hair I have a full set (never trim). I also have the x40 Extreme(with the hand pump). what I found was putting some Vaseline on the comfort pad.Doing so makes it seal (98% of the time). so with no shaving of pubic hair and a couple pumps from the hand pump it stays on for me. Afterwards I make sure of case to thoroughly wipe comfort pad inside bathmate to get ride of an Vaseline residue.


Adam Rouge

Thanks for sharing that! I will try the vaseline idea, it sounds like it could work well.


Leave a Reply

9 + 7 =