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EVERY brand says that their Small is for younger users who have not had children that and their Large is for those over a certain age and/or have given birth.  But what they are called doesn't fall within any range of physical sizes.  For example, some "smalls" are larger than some "larges."  Don't pick a brand or a size first. The chart I've linked to is divided into three widths and 6 lengths.  You know your body best.  Figure out where you fall within those length and width categories and then choose from those cups that fall within your fitment parameters.

Due to the layout, the chart didn't fit without getting cut off any more so go to


for (hopefully) a better version of it.

And here is a link to ANSWERS TO COMMON QUESTIONS: http://kuradi8.livejournal.com/

lutyalapolutyalapo on August 18th, 2008 08:43 pm (UTC)
Are those lengths including the stem or without?
Kai: pic#77976566kuradi8 on August 18th, 2008 08:43 pm (UTC)

WITHOUT the stem.
devil_blondit on August 18th, 2008 09:04 pm (UTC)
This is a really good post. This'll help a lot of people with buying decisions.
Rohaarohaa on August 18th, 2008 09:31 pm (UTC)
Wow, thanks for your effort in this, this is seriously useful.
Jennnakedfaery on August 18th, 2008 09:37 pm (UTC)

My brain is failing me atm. I'm giving up my Mooncup because I don't find it comfortable in my weird shaped vagina. I'm looking for a cup which is long and thin. Which would be the best according to these measurements?
Robinhwin on August 18th, 2008 11:04 pm (UTC)
Possibly a small Keeper/Moon Cup? That looks like the longest/thinnest to me.

(side note: I have a Keeper and it works great for me.)
(no subject) - whitelime on August 19th, 2008 12:10 am (UTC) (Expand)
crystal: marriedtothesea.comjust_a_spark on August 19th, 2008 05:13 pm (UTC)
woo! go keeper!
mikana78mikana78 on August 20th, 2008 12:00 pm (UTC)
I cant believe the small ladycup only holds 11. I dont suppose anyone knows how much blood is in 3 teaspoons full? (is that the average flow?)
Kai: pic#77976566kuradi8 on August 20th, 2008 01:08 pm (UTC)
OOPS! I made a mistake. Original reply deleted and corrected here:

Three teaspoons is one tablespoon, which is appx 15ml.

If you Google average flow, you will find that it varies widely! Of those that give actual numbers, you will see two different answers come up regularly.

One is 30-40ml of "blood" but I don't think that measures the other fluids that menstrual flow contains. That's appx one full (large) Diva or Mia or Lady or Lunette.

The other is appx 100ml, which appears to be total flow, including the other fluids. That's three full large cups. (Cups meaning our cups, not measuring cups.)

That 11ml measurement is "to the air holes," not to the brim. Do you have a small Lady Cup? Do you have a way to measure yours? Please post your result if you do.
(no subject) - speckwalk on May 1st, 2009 09:30 pm (UTC) (Expand)
MissKitty_79: insteadmisskitty_79 on August 27th, 2008 02:35 pm (UTC)
This post should TOTALLY be linked to directly on the info page! :)
Kai: pic#77976566kuradi8 on August 27th, 2008 03:09 pm (UTC)
Thanks, it's tagged to Brand Comparisons and Buying Decisions. And I'm not shy about pointing people to it. [wink]

There are some controversies regarding the measurements and also the capacities. No one seems to be able to come up with the same numbers twice.

Feh, it's close enough. It gets the point across. "Pick one that you think will FIT," not just the prettiest one.
(no subject) - misskitty_79 on August 27th, 2008 03:13 pm (UTC) (Expand)
whitelime on September 7th, 2008 02:27 pm (UTC)
psst - ladycup L / mia L should be 7th in the W:L chart.
Kai: pic#77976566kuradi8 on September 7th, 2008 07:26 pm (UTC)
Thanks AGAIN!!! :o)
I made the correction.
(no subject) - whitelime on September 7th, 2008 09:44 pm (UTC) (Expand)
little lanternlittle_lantern on September 20th, 2008 11:09 pm (UTC)
Heya, I know this is going to sound like a ridiculous question but how are you supposed to know which sizes apply to you?

Thanks for any advice xxx
Kai: pic#77976566kuradi8 on September 21st, 2008 12:08 am (UTC)
The more you consider size and fit, the less chance of error you'll have. The gals who just buy one at random are most likely to have problems. Like me. My first cup was a disaster. That's why I made up these charts.

Figure out the height of your cervix during your period, then choose a length accordingly... short, long or somewhere in between.

Guess at which of the three widths would suit you best.

See what is available in those approximate sizes.

If you're stuck between two or three, consider their capacities as well as their sizes.

Then cross your fingers and hope for the best. Let the list know which one you think you want and someone here can probably point you toward a "best price."

PS - Kai?
(no subject) - little_lantern on September 21st, 2008 04:01 pm (UTC) (Expand)
(no subject) - kuradi8 on September 21st, 2008 07:58 pm (UTC) (Expand)
(no subject) - little_lantern on September 26th, 2008 01:01 am (UTC) (Expand)
eureka_in_doubt on November 2nd, 2008 10:26 pm (UTC)
When you measured the capacity of the large Ladycup, where did you fill it to? I only ask, because the menstrualcups.wordpress.com site states that the large Ladycup holds 26ml, while your measurment states 20ml... that's just such a huge difference. It's easy to understand a variance in measure, but one so huge -? I'm a little confused.

I used the menstrualcups measurement to decide what cup to order as a backup, and now I'm wondering if I ordered a cup that doesn't have the capacity I need. -_-;

Edited at 2008-11-02 10:27 pm (UTC)
Kai: pic#77976566kuradi8 on November 2nd, 2008 10:45 pm (UTC)
I have only personally measured the capacity of 4 of the cups. They are marked with asterisks. The other measurements come from various places on the web -- and are supposedly to the holes.

If you have a way to measure yours "to the holes," please do so and I will adjust the chart accordingly.
(no subject) - eureka_in_doubt on November 2nd, 2008 10:50 pm (UTC) (Expand)
happyphantom715 on November 14th, 2008 05:37 pm (UTC)
As for the Miacup capacity, the website says that the small holds 25ml, and the large holds 30ml.
Kai: pic#77976566kuradi8 on November 14th, 2008 06:45 pm (UTC)
Manufacturer capacities are "to the brim." These are "to the holes" which is more representative of how much we can actually allow them to fill before they start to overflow.
Extraordinary :-D .. and Yuuki ! - quitterie on November 22nd, 2008 01:14 pm (UTC) (Expand)
Re: Extraordinary :-D .. and Yuuki ! - kuradi8 on November 22nd, 2008 01:50 pm (UTC) (Expand)
Re: Extraordinary :-D .. and Yuuki ! - quitterie on November 22nd, 2008 07:26 pm (UTC) (Expand)
Re: Extraordinary :-D .. and Yuuki ! - kuradi8 on November 22nd, 2008 08:33 pm (UTC) (Expand)
Re: Extraordinary :-D .. and Yuuki ! - quitterie on November 22nd, 2008 09:12 pm (UTC) (Expand)
Re: Extraordinary :-D .. and Yuuki ! - quitterie on November 24th, 2008 11:16 pm (UTC) (Expand)
Re: Extraordinary :-D .. and Yuuki ! - indigo_dawn on December 18th, 2008 07:44 pm (UTC) (Expand)
Re: Extraordinary :-D .. and Yuuki ! - xchaosbutterfly on January 3rd, 2009 05:32 pm (UTC) (Expand)
indigo_dawnindigo_dawn on November 22nd, 2008 02:30 pm (UTC)
I just measured my lunette size 1 on a whim (using a 10ml syringe, the same used in hospitals - I'm training to be an RN so I have lots of such equipment around) and I got 20 ml until the water was just *touching* the base of the holes. What did you use to measure yours? :)
Kai: pic#77976566kuradi8 on November 22nd, 2008 02:38 pm (UTC)
I also used a 10ml syringe that came with the ink refill kit for my ink jet printer. Yours is probably more accurate. I have adjusted the chart to say 19-20. :o) Thanks!
Lost: green - green is sexygypsy_owl on December 14th, 2008 09:49 pm (UTC)
Heads Up
Yuuki site is back up. Not that I personally can read one word of it, but it's there! And is a cup site.
Kai: pic#77976566kuradi8 on December 14th, 2008 10:33 pm (UTC)
Re: Heads Up
YAY! I'll take away "Out of Business?"

If you search for Yuuki.cz at Google.com then you can hit "translate" to get their pages in your default language.

They still don't say how long their cups are WITHOUT the stems.
(no subject) - gypsy_owl on December 14th, 2008 10:44 pm (UTC) (Expand)
(no subject) - kuradi8 on December 14th, 2008 11:08 pm (UTC) (Expand)
ashes to ashes, we all fall down.ayiko on December 21st, 2008 03:27 am (UTC)
Okay, so I feel extremly stupid right now.
I am seriously thinking of getting one, but have no clue what size. I came across this page, and am still very confused. I read all the comments to this post, but it didn't help. (Like I said, I'm stupid.)
Can anyone explain it so I can understand it?
Sorry to be a pain!!
Kai: pic#77976566kuradi8 on December 21st, 2008 01:35 pm (UTC)
It's like buying a pair of pants. Pick a range of lengths that would fit you. Then narrow your choices down with widths that would fit you. Then narrow your remaining choices by capacity and personal preference of shape.

Someone who has had a few kids would probably find the tiny "teen size" cups to be too small. On the other hand, a teen virgin would probably not have success inserting the extra long, extra wide cups. Of course, everyone's body is different so use the dimensions to pick one that you think will fit YOU.
(no subject) - adrianpost on January 1st, 2009 08:07 pm (UTC) (Expand)
(no subject) - kuradi8 on December 21st, 2008 01:36 pm (UTC) (Expand)
(no subject) - draguakale1979 on March 28th, 2010 02:02 pm (UTC) (Expand)
(no subject) - kuradi8 on March 28th, 2010 02:23 pm (UTC) (Expand)
(no subject) - draguakale1979 on March 28th, 2010 07:08 pm (UTC) (Expand)
directorgirl on December 27th, 2008 09:28 am (UTC)
I'm a new user of cups. I recently bought a lge lunette and had my first trial with it yesterday and today. Yesterday was fine and I was thinking this thing is brilliant! but today some MAJOR cramping after putting it back in and I had to pull it out in a blind panic. I don't know what went wrong - I'm sure it was in exactly the same place as it was previously. I was wondering what people have learnt about cramping? What or where internally is the problem? Is it the cervix itself or is it if the cup is pushing at the top or bottom of your insides? Also, I was wondering about the cup being wide all the way down... Has anyone found that a wide rim (and I need that) but narrower in the body helps with cramps?
Kai: pic#77976566kuradi8 on December 27th, 2008 01:17 pm (UTC)
Re-post these questions as a new entry by using the POST option at the top left of this or the main page at http://community.livejournal.com/menstrual_cups/ This post wound up at the tail end of a post that is MANY months old that others will not find.
Re: The Alicia Cup - directorgirl on December 28th, 2008 02:29 am (UTC) (Expand)
(no subject) - draguakale1979 on March 28th, 2010 02:09 pm (UTC) (Expand)
(no subject) - kuradi8 on March 29th, 2010 02:08 am (UTC) (Expand)