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Health Enhancement Products

Bathmate Size Guide

Bathmate sizing is not always simple, and it leads to lots of guys buying the wrong model. To get the most out of your penile enlargement pump, it is essential to choose the best size for you.

Also, read the full Bathmate and Hydromax review that includes: usage tips, model overviews, comparisons, customer reviews, and health benefits from pumping.

Before continuing, note that the below guide is based on pumps purchased from the Official Manufacturer. If you are buying from a reseller, the sizing may be different.

Initially, we recommend that you learn how to properly measure your penis.

Size Chart

You must prepare two dimensions: erection length and erection girth.

 

Pump Name

MANUFACTURER’S MAXIMUM GROWTH SPECS RECOMMENDED FOR CURRENT SIZE
LENGTH GIRTH LENGTH GIRTH
Hydromax X20 (Hydromax5) 7.5 inches (19.1 cm) 5.5 inches (14.0 cm) Up to 5.0 inches (12.7 cm) Up to 3.8 inches (9.6 cm)
Hydromax X20 Xtreme (HydroXtreme5)
Hercules (Hydro7) 8.5 inches (21.6 cm) 6.7 inches (17.0 cm) Up to 7.0 inches (17.8 cm) Up to 4.9 inches (12.4 cm)
Hydromax X30 (Hydromax7)
Hydromax X30 Xtreme (HydroXtreme7)
Hydromax X30 (Hydromax7) Wide Boy 8.5 inches (21.6 cm) 7.9 inches (20.1 cm) Up to 7.0 inches (17.8 cm) Up to 6.1 inches (15.5 cm)
Hydromax X40 (Hydromax9) 10.0 inches (25.4 cm) 7.9 inches (20.1 cm) Up to 8.4 inches (21.3 cm) Up to 6.1 inches (15.5 cm)
Hydromax X40 Xtreme (HydroXtreme9)
Goliath (discontinued) 10.5 inches (26.7 cm) 9.0 inches (22.9 cm) 9.2 inches (23.3 cm) 7.4 inches (18.8 cm)
Hydromax X50 Xtreme (HydroXtreme11)
Bathmate-Hydro-Pumps-Size-Guide

This official sizing guide above used more conservative measurements.

The manufacturer’s maximum growth specifications indicated here is the maximum penis size that will fully fit the tube. The manufacturer came up with these numbers by subtracting roughly 1 to 1.5 inches from the pump’s internal dimension to compensate for suction-seal action. If your size already reached the upper limits of a particular pump, it is a sign that you have outgrown it, and that you need to move to the next model.

The recommendations columns will correlate your current penis dimensions with a suitable pump. To arrive at these recommended sizes, we subtracted around 1 to 2 inches from the pump’s maximum growth specs to compensate penis growth.

Those dimensions are based on pumps purchased from the official Bathmate manufacturer’s website OfficialHydromaxPump.com.

The guide below is slightly more updated to include the X20 and the X30 Wide Boy. Its measurements are closer to our tests and recommendations:

bathmate-sizing-guide-updated

Buying a pump that is too Large or too Small

Do not just buy the biggest pump as it is not a wise choice.

  • If you buy a pump that is too large for your girth, the pump won’t plug quickly and it will suck up your scrotum and will give you sore balls.
  • If you buy a pump that is too small for your girth, you will feel some discomfort as your penis’ head will rub on the inner sides of the tube.
  • If you buy a pump that is too large for your length, it should not cause problems as long as the pump’s girth closely fits your base girth to get a nice plug.
  • If you buy a pump that is too small for your length, you will be wasting your money as you won’t have ample room to grow.

Upgrading to a Bigger Pump

For your penis to reach the maximum growth allowed by the pump, it will take around two years of constant penile workout with proper routines and jelqing exercises.

Girth growth is more limited than length growth — once you gained 1-1.5 inches of additional girth, expansion in this area becomes harder. If your penis has reached the maximum girth but still has 1-2 inches allowance for length, it’s not urgent to change pump if you want to focus solely on gaining a longer penis.

If you reached either the maximum girth or the maximum length (or both), it is time then to move on to the next model if you want to grow simultaneously in both aspects. Refer to the table again to confirm if you have exceeded the maximum growth specs or if one of our recommendations matches your new dimensions.

Takeaway

You’ll be using your pump for a quite a while so use the sizing chart and other information provided here to choose wisely the most fitting model.

Video Explanation

This video is from the official manufacturer and does not contain nudity.

Updated: August 7, 2018 — 12:44 am

62 Comments

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  1. My erect length is 7.1″ and 5.0″ girth. I care more for girth than length. Would I run into problems using the x30 wide?

    1. There wouldn’t be a problem. You fit the recommended dimensions perfectly.

  2. I have 7.1 inch erect length and 4.5 inch erect girth… Any recommendations?

    1. X30 is perfect for you.

  3. Which Bathmate would you suggest for EL: 4.2″ and EG: 5″?

    Would wearing an extender help after the Bathmate session?

    1. I would suggest you go with the X30 (rather than X20) because of your girth.

      And yes, an extender would help you a lot. That is because extenders help with length gains more than with girth, and in your case, your girth is fine.

  4. Not sure which would be best for me, xx20 or xx30. I’m 5.1″ erect to the bone, 12-14cm circumstance, 1.6″ 1.8″ width erect. Also my balls don’t hang low. I’m concerned if I go with the xx30 I might be dealing with them getting sucked up. What would you suggest? Thanks

    1. I would recommend the XX30. Since your girth is larger, you should not have problems with your testicles getting sucked.

  5. I am 5.2 inches length and 3.6 inches girth. Which one is right for me?

    1. I would suggest the X20 for you. If you think you will get larger gains in the next year (which may be possible if you exercise with the pump more), then get the X30.

  6. I have a curved penis, that, when straightened, is 7.8 BPEL and 4.8 EG. My un-straightened BPEL is ~7″. I am wondering if I should use the Hercules or the X30 because my curve reduces my overall length to fit within the Hercules/X30 range, but when straightened, my erect size fits within the X40 range. Since my EG measurement is much more compatible with the X30/Hercules, I think that I would rather go this route all other things being equal because I’ve heard of some difficulty in using the X40, e.g., balls getting sucked and it just being too large of a size to get good results. Any advice?

    1. To be honest, I am not exactly sure whether a curved penis will be able to fit into the pump. But then again, I don’t know how curved your penis is…

      Take a note that the pump is 100% straight. And I heard that even guys with a straight penis sometimes complain that it is uncomfortable when the tip rubs against the side of the cylinder when pumping.

      1. I guess I don’t know if the Bathmate makes your penis erect when pumped? Any comment?
        If so, then my pronounced curve might not fit into the Hercules. If it were to just pull the penis like in measuring BPEL, I think I could be ok with the the Hercules.

        1. This may be extreme, but when you said ‘curved’, the first thing that came to my mind was Peyronie’s condition (look up some images).

          Bathmate may make your penis erect at times. Sometimes, it would stretch it when flaccid.

          If you are worried about your penis not fitting due to the curvature – get some lube and a slightly larger pump than your girth.

          I would also suggest you to contact Bathmate directly with your question.

  7. If I am 9.5L and 6.25G, can I still use the x40 if I want to focus on girth?

    1. I would still suggest the x50. Because as you are pumping, you will be hitting the top of the pump after a few months since you will gain length as well.

  8. I’m 6″ in length, 1.75″ in width and 5.25, sometimes 5.5″ in girth… It appears the wide boy is no longer on the official site, I want at least 7″ in length and 6 in girth, is the x30 xtreme the right size for me and my goals?

    1. The Wide Boy should be back in stock soon (if not already). With your goals, the X30 would be fine. At least for a few years.

  9. I’m currently 6.5″ in length and 5.5″ in girth, which pump would be good for me?

    1. Get the X30 Wide Boy. Because your girth is more than average.

  10. Hi, I am 7.2 inches fully erect and around 8 inches when bone pressed. My girth is 5 inches.
    My goal is to gain around 1.5 to 2 inches in girth and no more than 1.5 inches in length.
    Which is the best product for me and why?

    1. X40 is perfect for you. You fit the CURRENT size metrics, and your growth expectations fit the MAXIMUM size specifications. Note, most penis measurements use the BPEL (Bone Pressed) metric, not the NBPEL.

  11. I´m 7.2 in length and 4.9 in girth. Which pump should I use, the x40 or x30?

    1. You will be fine with either one. Depending on how much future growth you would want to work towards.

  12. Back after 16 weeks.
    No gain in girth or length.
    I’ve been jelqing every day before pumping.
    Pumping 6 days a week for 20 mints.
    What’s wrong??
    Why I’m not getting any change??

    1. That is very strange to be honest. Are you not getting ‘ANY’ change? Maybe you are not measuring your penis correctly? You should see ‘SOME’ change…

      Similar to a person that has been working out in the gym intensely for several months, and claims that he is not seeing ‘ANY’ change. That is very unlikely.

      1. That’s why I’m seeking advice.
        I must gain some by now.
        Could you tell me what I’m doing wrong?

        1. Here are some troubleshooting and tips:

          1. How many gains you got? Even half an inch is a fair start and I wouldn’t call it ‘nothing’.
          2. Does the pump hold pressure well? Do you feel stress on your penis when pumping?
          3. Have you tried the 2 days on, one day off routine we suggested?
          4. Try some more basic penis exercises aside from jelqing.

  13. I’m 8.25″ in length and 6″ in girth. Yet to start pumping. Which Bathmate is right for me? Thanks.

    1. You are in between the X40 and the X50. As we mentioned to another user below, what are your final goals? And how keen are you on upgrading the pump a few years from now?

  14. I’m 5.5-6 inches length, and I bought the x40 Xtreme thinking that it will give me room to expand.
    Should I downgrade to a smaller one?

    1. You should be fine. Have you tried the pump already? You should be more concerned about getting a pump that is too small, rather than one that is too big.

  15. I am currently 7 inches long and about 5.5 inches in girth. Which pump would you recommend?

    1. Go with the X40. You should be good for a couple of years.

  16. Which pump would you recommend with a starting length of 6.5” and girth of 5 3/4”?

    1. You are more girthy, so I would suggest you get the X30 Wide Boy. However, the X40 would fit you as well and will provide you with more future growth.

      It comes down to what your final goals are – would you be happy with getting a length of 7.5″ and maintaining it? Then choose the X30. If you plan to keep pumping hard for several years and go over 7.5″ – get the X40.

  17. Why the color of my man starts changing to dark red after I start using X30??

    1. When you are using pump pressure with restriction on ANY part of the body, it will temporarily darken the skin as it is getting more blood flow. Having a darker penis means that you are actively training. The color will lighten up when you take a break from PE.

      1. How long should I take break for?
        Am I pumping too hard?

        1. I would say – after 3 days break – your penis color should return to normal.
          And no, you are not pumping too hard. It is perfectly fine and you can keep training at this rate.

          1. What about the little pain in the balls while pumping. Is it normal?

          2. Is that because your testicles get sucked into the pump? That is common. Try to warm your testicles up a bit before pumping, and attach the pump a bit higher.

          3. Now I’m taking 1 day/week as a break.
            With 20 mints maximum pumping, I’m not getting any gain anymore.
            I have to pump for 30 mints to see gains.
            Is that ok??

          4. You are pumping 6 times per week for 30 minutes? That is a bit too excessive…
            Measure your gains once per month, not after every session.

            And yes, there are plateaus along the way, just like with any long journey you may go through (whether it is weight lifting, weight loss, or even learning a new language).

          5. 6 time per week for 30 mints may seem to you a bit too excessive…
            But before, I used to pump for 20 mints, and I was able to see a clear, immediate gain in girth and length even though it’s not permanent.
            But now with the excessive pumping, I’m not able to see any immediate gain.
            Why is that??

          6. Beginners see gains faster than intermediate users. Your first inch is the easiest.

          7. I’ve been using x30 for more than 3 months but am not getting any length grow, only get girth increase for 3 to 6 hours, then get back to normal.
            x30 was my fit.
            Now I’m taking 1 day/week as a break.
            With 20 mints maximum pumping, I’m not getting any gain anymore.
            I have to pump for 30 mints to see gains.
            Is that ok??

          8. I would say that you should take more than 1 day per week break. I feel like your penis has reach the short-term maximum growth. Your skin tissue is not infinitely expandable. You have to give it more time to get more expansion.

  18. Hi, I’m a typical asian looking at X20. However, my circumference girth is 13cm, will X20 be too tight?

    1. In your case – I would suggest you get the X30.

      Note that there are no big discomforts when using a slightly larger pump than you need. Penomet (for example) is manufactured in only one size – which is similar to the X50.

      1. With your estimation, the X20 will likely cause discomfort?

        1. At the very beginning – probably not. But after 3 months of use as you are getting bigger – it would get uncomfortable.

          1. Thanks for the advice.
            For beginners, will it be better to follow your beginner schedule with resting or to pump everyday for 6 weeks?

  19. I’ve been using x30 for more than 3 months but am not getting any length grow, I only get girth grow for 3 to 6 hours and then get back to normal.
    x30 was my fit.
    Why am not getting length grow??

    1. 3 months is still a short amount of time to assess gains. I would also recommend that you do some jelqing – this exercises helps length really well. Jelq for a few minutes before and after pumping.

      1. What would be the time expected to see length gains?
        I do jelqing as well, but not in between. So should I do them in between??

        1. I would say, measure your size after every month of PE exercises. You should see noticeable gains after 6 months.

          “In between” – you mean in between pumping sessions? That is optional. I would suggest you do jelqing before and after pumping.

          1. Is it better to do the pumping with an erection?
            What is a good timing for pumping? Is it 20 minutes or 30 minutes?

          2. It is good to alternate between pumping erect and flaccid as we mentioned in our guide. Erect pumping is better for girth gains, while flaccid pumping is better for length.
            You should pump for up to 20 minutes per day.

  20. I’m in between the 20x and the 30x. I have a circumference girth of 4 inches and a 1/4 when erect and a length of 5.5-6 inches which would be towards the 30x. Which would be the right choice? Would the 30x fit?

    1. Yes, the x30 pump will fit perfectly, and will provide room for growth. The x20 would be a bit tight to begin with.

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