Guide

Ultrasmall Menstrual Cups: The Smallest Cups You Can Buy

The smallest menstrual cup in our database is the Formoonsa Training Cup. The diameter is 36 mm, the body is 31 mm, the stem is 24 mm, it has a total length of 55 mm, and it can hold up to 10 ml.

Find my perfect menstrual cup

Our definition of ultrasmall is based on hundreds of menstrual cups and their measurements.

The limit we set for a menstrual cup to be qualified as an ultrasmall cup is < 45 mm in body length.

You should consider an ultrasmall menstrual cup if:

You have a low cervix (short vaginal canal).

How do I know if I have a low cervix?

Illustration of the female reproductive system including the cervix

Illustration of the female reproductive system including the cervix and a menstrual cup

What is a cervix?

The cervix is essentially the connection between the vagina and the uterus.

Female reproductive system close up

And a low cervix is a term used to describe a cervix that is felt low in the vagina.

Cervix height illustration

To determine the height of your cervix I recommend checking the section "Low, Medium or Heigh Cervix: Determining the Height of Your Cervix" in our article Menstrual cups for a low cervix.

The article is packed with educational images and nice-looking illustrations!

Once you’ve measured your cervix and are sure you have a low cervix come back to this post and familiarize yourself with the ultrasmall cups in the following section.

Ultrasmall menstrual cups

Me Luna Shorty

Me Luna Shorty Sizes

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
Me Luna Shorty S 38 mm 35 mm 12 mm 47 mm 15 ml Germany Germany
Me Luna Shorty M 41 mm 38 mm 13 mm 51 mm 18 ml Germany Germany
Me Luna Shorty L 44 mm 41 mm 14 mm 55 mm 22 ml Germany Germany
Me Luna Shorty XL 47 mm 44 mm 15 mm 59 mm 27 ml Germany Germany

Me Luna Shorty cups have a slightly different shape than the standard Me Luna.

They are slightly shorter and run tapered to a point.

The Me Luna Shorty pop opens more strongly and seals more firmly than other models.

This is due to the shorter cone shape.

Breaking the seal and removing the cup could, therefore, require more practice.

One reason I like Me Luna so much is that you can design your own cup!

You can choose firmness, standard or shorty, handle style, and size.

The Me Luna Shorty is offered in four sizes:

Small, Medium, Large, and Extra Large.

You can choose between three firmness levels:

Soft, Classic, and Sport.

Soft being the softest, Classic is medium soft and Sport is the firmest.

And you can choose between three handle styles:

Stem, ring, and ball.

How cool is that?

JuJu Model 4

JuJu menstrual cup sizes

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
JuJu Model 4 48 mm 40 mm 10 mm 50 mm 32 ml Australia Australia

The JuJu Model 4 has a shorter body and stem and is more bulbous in shape compared to the other JuJu Models.

It’s the widest of the four models measuring 48 mm in diameter.

JuJu cups are available in two finishes:

Smooth and “grippy”.

“Grippy” is a newer finish.

The newer finish has a more pronounced grip pattern in a matte finish on the base of the cup.

The newer finish also has a thicker stem.

The JuJu Model 4 is only available in the newer “grippy” finish.

Bear in mind that a more pronounced grip pattern makes removal easier but may irritate the delicate tissue in the vagina whilst a smoother finish is more comfortable and easier to clean but more difficult to remove.

Formoonsa Cup

Formoonsa menstrual cup sizes

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
Formoonsa Training Cup 36 mm 31 mm 24 mm 55 mm 10 ml Taiwan Taiwan
Formoonsa Standard Cup 44 mm 37 mm 17 mm 54 mm 20 ml Taiwan Taiwan
Formoonsa Large Cup 48 mm 44 mm 8 mm 52 mm 30 ml Taiwan Taiwan

The Formoonsa Cup is a Taiwanese brand.

The cups are manufactured in Taiwan.

The Formoonsa menstrual cup was launched in February 2017 and is the first-ever menstrual cup brand from Taiwan.

Regarding features.

The Formoonsa cup has a spill-proof design.

The top part of the cup folds inward to prevent blood from spilling upon removal.

The rim is designed with a special area for an easier C-fold.

Training, Standard, and Large models do not have any air holes compared to the Classic and Soft.

FemmyCycle

FemmyCycle Petite

FemmyCycle Regular

FemmyCycle Low Cervix

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
FemmyCycle Petite 31 mm 38 mm 15 mm 57 mm 17.5 ml USA USA
FemmyCycle Regular 36 mm 43 mm 7 mm 50 mm 30 ml USA USA
FemmyCycle Low Cervix 36 mm 43 mm 20 mm 63 mm 30 ml USA USA

The FemmyCycle features a no-spill foldable rim design.

The spill-proof design helps you not to spill/splash as you pour out your menstrual flow from it.

When the FemmyCycle is in catching blood mode menstrual flow is funneled in thanks to the folded lid.

Another unique design feature that might seem a little bit strange, but that FemmyCycle says is nothing to worry about, is that the cup doesn’t need to open completely once inserted.

Opening up as much as it needs to is enough.

The FemmyCycle cup will still function properly and catch the blood.

There have been slight modifications to the design of the FemmyCycle over the years.

Today’s models are softer and the pull-ring is less bulky.

Also, unlike other menstrual cups, FemmyCycle cups do not have any air holes at the rim.

The FemmyCycle is available in three sizes:

Petite, Regular, and Low Cervix.

Merula Cup One-Size

Merula Menstrual Cup Size

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
Merula Cup One-Size 46 mm 39 mm 33 mm 72 mm 38 ml Germany Germany

The Merula menstrual cup is made of medical-grade silicone.

It is produced in Germany and was introduced to the market at the beginning of 2017.

One unique feature of the Merula is that the cup doesn’t need to completely unfold.

Similar to the FemmyCycle.

The bottom of the cup can stay collapsed.

Merula cups do not have any air holes.

And it does not have any grippers at the base of the cup.

This can make removing the cup more difficult.

Merula cups have a long, ladder-shaped stem that you can easily trim with a pair of scissors.

Be sure to wash the scissors and cup before and after!

The Merula Cup is available in two sizes:

“One size” and extra-large.

OrganiCup Mini

OrganiCup Mini Size

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
OrganiCup Mini 37 mm 44 mm 14 mm 58 mm 17 ml Denmark China

OrganiCup was born in Copenhagen, Denmark in 2012.

Size A and B have been around for a while but size Mini was launched in 2019.

OrganiCup is made of medical-grade silicone.

The medical-grade silicone is made in the US and the cup is produced in China.

The OrganiCup Mini is intended for teens or those who need a smaller sized cup.

MermaidCup Guppy

MermaidCup Guppy Sizes

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
MermaidCup Guppy Soft Size 1 45 mm 40 mm 24 mm 64 mm 24 ml Malaysia China
MermaidCup Guppy Soft Size 2 48 mm 40 mm 24 mm 64 mm 28 ml Malaysia China
MermaidCup Guppy Firm Size 1 45 mm 40 mm 24 mm 64 mm 24 ml Malaysia China
MermaidCup Guppy Firm Size 2 48 mm 40 mm 24 mm 64 mm 28 ml Malaysia China

The MermaidCup Guppy is designed in Malaysia and manufactured in China.

It is made of Japanese medical-grade silicone.

The Guppy model is considered a low cervix cup and comes in four models:

Soft Size 1, Soft Size 2, Firm Size 1, and Firm Size 2.

The MermaidCup Guppy comes equipped with grippers at the base of the cup, measuring markings, air holes, and an adjustable stem.

SckoonCup Size 1

Sckooncup menstrual cup

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
SckoonCup Size 1 40 mm 40 mm 30 mm 70 mm 23 ml USA USA

The SckoonCup is produced in the USA and was introduced to the market in 2013.

It’s made of medical-grade silicone and the cup is both FDA registered and FDA cleared.

FDA 510(k) clearance is a further assurance that a cup brand is of good quality and in compliance with the FDA requirements for medical devices.

So if you’re really wary about what sort of feminine hygiene products you use, I recommend considering a menstrual cup that is FDA cleared.

Here’ a list of all FDA cleared cups in the USA.

Regarding features.

The SckoonCup has grip patterns, air holes and compared some other menstrual cups it is molded in one single piece.

The result of this process is a cup without any seams that can irritate the delicate tissue in the vagina.

The SckoonCup comes in two sizes:

Size 1 (Small) and Size 2 (Large).

Size 1 is the shorter of the two and is recommended for a low cervix.

bfree Cup Zero

bfree Cup Zero

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
bfree Cup Zero 38 mm N/A N/A 44 mm 10 ml Canada Canada

The bfree cup is a Canadian brand.

It was launched in 2018 and is the worlds first antibacterial menstrual cup.

The term antibacterial means it doesn’t need water and it doesn’t need to be boiled.

You can just wipe it clean.

How it works:

What this technology essentially does is prevents the attachment of bacteria onto the medical-grade silicone.

This innovative design is not found in any other menstrual cup.

Other features include tactile finger grips, a spherical-shaped stem (not supposed to be trimmed), and no air holes.

The bfree cup comes in 4 different sizes and the bfree zero which is the smallest of the four can hold up to 10 ml of menstrual flow.

Tampax Cup Regular

Tampax Cup

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
Tampax Cup Regular 48 mm 42 mm N/A N/A 25 ml USA USA

The Tampax Menstrual Cup is made in the USA.

Its main feature is its so-called SoftCurve shape (V-shape) which means the cup is not as rounded at the bottom as other menstrual cups and therefore puts less pressure on your bladder.

The Tampax menstrual cup is made of medical-grade silicone and comes in two sizes:

Regular and Heavy.

Mïu

Mïu La P'tite menstrual cup size

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
Mïu Soft Small 41 mm 44 mm 16 mm 60 mm 18 ml France France
Mïu Firm Small 41 mm 44 mm 16 mm 60 mm 18 ml France France

The Miu menstrual cup is made of medical-grade silicone and is produced in France.

It comes in two sizes:

Small and Large.

And two firmness levels:

Soft and Firm.

Ultrasmall menstrual cups comparison chart

Menstrual cup Diameter Body length Stem length Total length Capacity Country brand Country manufacturer
Me Luna Shorty S 38 mm 35 mm 12 mm 47 mm 15 ml Germany Germany
Me Luna Shorty M 41 mm 38 mm 13 mm 51 mm 18 ml Germany Germany
Me Luna Shorty L 44 mm 41 mm 14 mm 55 mm 22 ml Germany Germany
Me Luna Shorty XL 47 mm 44 mm 15 mm 59 mm 27 ml Germany Germany
JuJu Model 4 48 mm 40 mm 10 mm 50 mm 32 ml Australia Australia
Formoonsa Training Cup 36 mm 31 mm 24 mm 55 mm 10 ml Taiwan Taiwan
Formoonsa Standard Cup 44 mm 37 mm 17 mm 54 mm 20 ml Taiwan Taiwan
Formoonsa Large Cup 48 mm 44 mm 8 mm 52 mm 30 ml Taiwan Taiwan
FemmyCycle Petite 31 mm 38 mm 15 mm 57 mm 17.5 ml USA USA
FemmyCycle Regular 36 mm 43 mm 7 mm 50 mm 30 ml USA USA
FemmyCycle Low Cervix 36 mm 43 mm 20 mm 63 mm 30 ml USA USA
Merula Cup One-Size 46 mm 39 mm 33 mm 72 mm 38 ml Germany Germany
OrganiCup Mini 37 mm 44 mm 14 mm 58 mm 17 ml Denmark China
MermaidCup Guppy Soft Size 1 45 mm 40 mm 24 mm 64 mm 24 ml Malaysia China
MermaidCup Guppy Soft Size 2 48 mm 40 mm 24 mm 64 mm 28 ml Malaysia China
MermaidCup Guppy Firm Size 1 45 mm 40 mm 24 mm 64 mm 24 ml Malaysia China
MermaidCup Guppy Firm Size 2 48 mm 40 mm 24 mm 64 mm 28 ml Malaysia China
SckoonCup Size 1 40 mm 40 mm 30 mm 70 mm 23 ml USA USA
bfree Cup Zero 38 mm N/A N/A 44 mm 10 ml Canada Canada
Tampax Cup Regular 48 mm 42 mm N/A N/A 25 ml USA USA
Mïu Soft Small 41 mm 44 mm 16 mm 60 mm 18 ml France France
Mïu Firm Small 41 mm 44 mm 16 mm 60 mm 18 ml France France

CUP-FIGURATOR™ - The Ultimate Menstrual Cup Finder to the rescue

Are you also overwhelmed by the millions of different menstrual cup options that we've listed in this post?

So am I!

It's difficult to know where to start.

Especially if it's the first time you're out on a quest for a menstrual cup.

But here's the good news: CUP-FIGURATOR™.

Our very own sophisticated menstrual cup finder tool.

If you haven't tried it already, give it a go, and let it do all the heavy lifting for you.

I think you'll be pleasantly surprised.

Sources

https://www.me-luna.eu/
https://www.juju.com.au/
https://www.formoonsacup.com/
https://femmycycle.com/
https://www.merula-cup.de/en/
https://www.organicup.com/
https://cottonmermaid.com/
https://www.sckoon.com/
https://bfreecup.com/
https://tampaxcup.com/
https://tampax.com/en-us
https://miu-cup.com/


Others also read