“I've been using this new cup for a week so far and it's super comfy. I've tried the regular Diva cup and that's way too long when I'm on my period. My previous go-to was a regular Fleurcup, but even that could be too long some days, and the silicone started harboring bacteria after about 8 years. This one is the perfect size for me! It's taken a little getting used to with the stiffer rim, but I get it now. The useable volume seems lower than the other two cups for me, so I need to empty it a bit sooner. I don't have a heavy flow.”
Don't Love Your Current Menstrual Cup?
Your current cup can help you find a better fit. Whatever isn’t working now can point you toward what needs to change. With more choices in diameter, height, firmness, and handles, MeLuna gives you more ways to get the fit right. See how your current brand compares below.
Why People Switch to MeLuna
A cup can be well made and still be the wrong fit for your body.
Meet MeLuna: Made in Germany, Designed for a Better Fit.Manufactured in Germany from medical-grade thermoplastic elastomer (TPE), MeLuna USA menstrual cups are made specifically for MeLuna USA, an independent, woman-owned small business in Texas. Our cups are FDA-registered and offer 168 possible configurations.
With multiple diameters, cup lengths, firmness options, and handle styles, MeLuna gives you more ways to find a comfortable, reliable fit whether you're switching from another brand or choosing your first menstrual cup.
MeLuna offers more ways to customize your cup than any other brand.
Choose from Small, Medium, Large, and XL instead of trying to make one of only two sizes work.
Choose Shorty for a low cervix or Standard for an average cervix. For a high cervix, pair a Ring Handle with a Nupsi extension for added reach.
Classic works for many users. Sport is firmer and resists compression from strong pelvic floor muscles.
Choose a Ball, Ring, or Stem based on how much grip and added reach you prefer.
Start with diameter, then consider cervix height
Diameter often matters most for preventing leaks. Cup height affects comfort and accessibility. A cup that is too long may create pressure, sit too low, or feel uncomfortable. A cup with too small a diameter may leak or slide down. A cup that sits high may be easier to reach with a Ring Handle and Nupsi extension.
Compare MeLuna Diameters
This image shows how the four MeLuna diameters compare with Diva Cup sizes. Use it as a general diameter reference when comparing MeLuna with other brands.
Compare the width of MeLuna Small, Medium, Large, and XL with Diva Cup sizes.
MeLuna Size Dimensions at a Glance
MeLuna Standard and Shorty cups come in the same four diameters. Shorty changes the cup height, not the diameter.
| MeLuna Size | Diameter | Standard Height | Shorty Height |
|---|---|---|---|
| Small | 38 mm | 45 mm | 35 mm |
| Medium | 41 mm | 48 mm | 38 mm |
| Large | 44 mm | 51 mm | 41 mm |
| XL | 47 mm | 56 mm | 44 mm |
Small
- Diameter
- 38 mm
- Standard Height
- 45 mm
- Shorty Height
- 35 mm
Medium
- Diameter
- 41 mm
- Standard Height
- 48 mm
- Shorty Height
- 38 mm
Large
- Diameter
- 44 mm
- Standard Height
- 51 mm
- Shorty Height
- 41 mm
XL
- Diameter
- 47 mm
- Standard Height
- 56 mm
- Shorty Height
- 44 mm
When comparing brands, start with diameter, then compare cup height based on cervix height and fit needs.
Their Old Cup Wasn't Quite Right Either
These customers came to MeLuna after another cup was too long, caused pressure, leaked, struggled during exercise, or simply wasn't comfortable.
“I have had a Diva Cup for years and when the plastic started to degrade, I thought I'd try something new. The Diva Cup was great but I hoped something slightly smaller would be more comfortable. So far, this cup is perfect. Due to the shorter length and how the plastic changes shape in heat, I have had less problems with pressure on my bladder, etc. and I am loving it!”
“I switched from diva cup to MeLuna sport as I kept having leaks. After researching I found out the leaks could have been due to having a too flexible cup. This one is indeed less flexible which has reduced any leaks especially during exercise.”
“This cup was my second try at a menstrual cup. My first was a saalt soft. I feel like I got the hang of this one faster. I switched because I thought I was sensitive or allergic to the other cup. It got very itchy after wearing for a couple of hours. This one didn't. Yay! It's pretty comfortable and worth the learning curve.”
MeLuna is made from TPE, not silicone
Some people who experience discomfort with a silicone menstrual cup prefer trying a cup made from a different material. MeLuna cups are made from medical-grade thermoplastic elastomer, commonly called TPE.
Individual experiences vary. Itching, pain, or irritation can have several causes. Stop using any product that causes discomfort and speak with a qualified healthcare professional when symptoms continue.
Side-by-Side Menstrual Cup Comparisons
Each comparison includes all four MeLuna diameters along with the competitor cup. Every cup in the image is arranged by diameter from smallest to largest, left to right, so you can easily see where the other brand falls within the MeLuna size range.
The images help you compare overall length, body shape, rim shape, and diameter.
Diva Cup Compared With MeLuna
Manufactured in: Canada
Is your Diva Cup too long or uncomfortable? MeLuna offers shorter cup bodies in both Standard and Shorty heights, with four diameters to help you find a better fit without sacrificing a reliable seal.
Use this chart to identify possible MeLuna alternatives based on fit or performance problems with a Diva Cup. Both Standard MeLuna (S, M, L, XL) and MeLuna Shorty options (M Shorty, L Shorty, XL Shorty) are shown.
Diva Cup
MeLuna
Diameter figures are approximate and can vary across published sources and product generations. Purple indicates an exact match to the figures shown; check your model before choosing a size.
Compare Diva Cup length and shape with the shorter MeLuna Shorty cup body.
Compare Diva Cup sizes with the full MeLuna Standard diameter range.
Diva Cup Too Long or Uncomfortable?
If your Diva Cup feels too long, the right replacement depends on how much shorter you need it.
Depending on size MeLuna Standard height cups may already offer a shorter cup body compared to Diva, while MeLuna Shorty provides an even more substantial reduction in length. Use the chart above to compare options without overlooking the diameter needed for a reliable seal
Saalt Cup Compared With MeLuna
Manufactured in: United States
Is your Saalt Cup difficult to remove, even when you squeeze the base? MeLuna's medical-grade TPE material can respond to compression throughout the cup, potentially making it easier to release the seal at the rim. Compare the sizes and shapes below to find a MeLuna option that may work better for you.
Saalt
MeLuna
Purple measurements indicate an exact published diameter match. Consider your previous cup’s fit when choosing a size.
Use this chart to identify possible MeLuna alternatives based on problems experienced with a Saalt cup. Both Standard MeLuna (M,L,XL) and MeLuna Shorty options (M Shorty, L Shorty, XL Shorty) are shown.
Compare Saalt cup length and shape with low cervix MeLuna Shorty cups.
Compare Saalt cups with the four MeLuna Standard diameters.
Saalt Cup Difficult to Insert, Open, or Remove?
A cup can be very flexible and still be difficult to remove. With some silicone cups, squeezing the base compresses the lower portion without sufficiently affecting the rim, allowing the seal to remain intact.
MeLuna Classic is our first recommendation when difficult removal is the main concern. Its medical-grade TPE material responds differently to compression and body warmth. Pressure applied to the base may also affect the shape of the rim, potentially making it easier to release the seal. As with any menstrual cup, always release the seal before removing it.
Diameter matters, too. If your cup is relatively narrow compared with your cervix, the cervix may sit tightly against or partially inside the rim, creating a seal that can be particularly difficult to release. In this situation, choosing an even smaller diameter may make matters worse. A slightly larger MeLuna diameter may give the cervix more room within the cup and help avoid that tight seal, depending on your anatomy.
If insertion or opening is also a concern, cup length, diameter, and firmness are worth evaluating. MeLuna offers four diameters and both Standard and Shorty heights, so you can adjust the fit without automatically switching to a firmer cup.
MeLuna Sport is designed to resist compression during exercise and strong pelvic floor engagement. Because that firmness can also make removal more challenging, Classic is generally the better starting point for someone already struggling with removal.
Flex Cup Compared With MeLuna
Manufactured in: United States
Frustrated by leaks with your Flex Cup? MeLuna offers a one-piece cup design without a moving pull-tab mechanism, along with four diameters and different handle styles to help you find a more reliable fit.
Flex Cup
MeLuna
Purple measurements indicate an exact published diameter match. Consider your previous cup’s fit when choosing a size.
Compare Flex Cup length with shorter MeLuna cup options.
Compare Flex Cup shape and length with standard height MeLuna cups.
Flex Cup Leaking?
A frequent complaint about Flex Cups is leaking. If you’ve experienced this problem, you may want to consider a different cup design. MeLuna menstrual cups feature a one-piece TPE construction without the moving pull-tab mechanism used by Flex. Our four diameter options also give you more flexibility to find a secure, comfortable fit. And if you originally chose Flex because you wanted a handle that’s easy to reach, MeLuna’s Stem and Ring options are worth exploring.
Pixie Cup Compared With MeLuna
Manufactured in: China
Is your Pixie Cup causing uncomfortable pressure or cramping? Differences in cup diameter, body length, and shape may help explain the discomfort. Compare Pixie's dimensions with MeLuna's options to explore a better fit. Side-by-side comparison photos are coming soon.
Pixie Cup
MeLuna
Pixie diameters are converted from the manufacturer's published inch measurements and rounded to one decimal place. Compare your previous cup's fit before choosing a size.
Side-by-side comparison photo coming soon; temporary image shown.

Side-by-side comparison photo coming soon; temporary image shown.

Pixie Cup Causing Cervix Pain or Cramping?
If your Pixie Cup causes uncomfortable pressure, cramping, or painful suction during removal, its diameter, shape, or position relative to your cervix may be contributing factors. MeLuna offers four diameters, Standard and Shorty lengths, and body-responsive TPE material, giving you different options to explore for a more comfortable fit.
Lena Cup Compared With MeLuna
Manufactured in: United States
Does your Lena Cup put uncomfortable pressure on your bladder? MeLuna's four diameters, different cup heights, and body-responsive TPE material give you more options to find a comfortable fit.
Lena Cup
MeLuna
Purple measurements indicate an exact published diameter match. Consider your previous cup’s fit when choosing a size.
Compare Lena Cup with MeLuna cups designed for a low cervix.
Compare Lena Cup sizes with the four MeLuna Standard diameters.
Lena Cup Causing Bladder Pressure?
Bladder pressure and discomfort are complaints some Lena Cup users experience. If your cup presses uncomfortably against your bladder or makes urination difficult, diameter and cup shape may be contributing factors. MeLuna offers four diameters and body-responsive TPE material that conforms to your body’s contours, giving you additional options for finding a comfortable fit.
Cora Cup Compared With MeLuna
Manufactured in: United States
Is your Cora Cup difficult to reach or remove because it sits too high? MeLuna offers Standard and High Cervix options, plus Ring and Stem handles that can make reaching and gripping your cup easier.
Cora Cup
MeLuna
Purple measurements indicate an exact published diameter match. Consider your previous cup’s fit when choosing a size.
See how Cora Cup compares with the shorter MeLuna cup body.
Compare Cora Cup with standard height MeLuna cup sizes.
Cora Cup Hard to Reach?
If your Cora Cup sits too high or is difficult to reach during removal, a longer cup may be the solution. MeLuna offers Standard and High Cervix cups with additional length, plus Stem and Ring handle options to make reaching and gripping easier. You can choose a cup that better matches your cervix height without sacrificing the diameter you need for a reliable seal.
The Honey Pot Cup Compared With MeLuna
Manufactured in: China
Compare The Honey Pot menstrual cup with MeLuna Shorty and Standard sizes.
The Honey Pot Cup
MeLuna
Purple measurements indicate an exact published diameter match. Consider your previous cup’s fit when choosing a size.
Compare The Honey Pot cup with low cervix MeLuna Shorty options.
Compare The Honey Pot cup with standard height MeLuna sizes.
Lunette Cup Compared With MeLuna
Manufactured in: Finland
Compare Lunette cup sizes with MeLuna Shorty and Standard options.
Lunette Cup
MeLuna
Purple measurements indicate an exact published diameter match. Consider your previous cup’s fit when choosing a size.
Compare Lunette with MeLuna cups designed for a lower cervix.
Compare Lunette cup sizes with standard height MeLuna cups.
OrganiCup / AllMatters Compared With MeLuna
Manufactured in: Germany
OrganiCup became AllMatters. Compare the Mini, A, and B diameters with MeLuna and use the photos to evaluate cup body height and shape.
OrganiCup / AllMatters
MeLuna
Purple measurements indicate an exact published diameter match. Consider your previous cup’s fit when choosing a size.


Discontinued or Hard-to-Find Menstrual Cups
Looking for a replacement for a discontinued or difficult-to-find cup? Compare diameters and real side-by-side photographs. A brand appearing here does not necessarily mean it has officially stopped production.
June Cup Compared With MeLuna
Manufactured in: China
June Cup is no longer operating. If you are replacing a June Cup, use these side-by-side photographs to compare shape and cup body height. Verify your original model’s diameter before selecting a replacement.
June Cup
MeLuna
Purple highlights mark exact published diameter matches. Rim width is only one part of cup fit.


Blossom Cup Compared With MeLuna
Manufactured in: China
Blossom Cup has become difficult to find. Its published Small and Large diameters fall between MeLuna sizes, so you may wish to consider the neighboring diameter options.
Blossom Cup
MeLuna
Purple measurements indicate an exact published diameter match. Consider your previous cup’s fit when choosing a size.


Super Jennie Compared With MeLuna
Manufactured in: United States
Super Jennie Large can be difficult to find. If you are looking for a heavy-flow alternative, compare it with MeLuna Classic Standard XL. In our photograph, Super Jennie Large has a wider-looking body, while MeLuna XL is slightly taller. Cup shape and rim diameter are different measurements.
Super Jennie
MeLuna
Purple measurements indicate an exact published diameter match. Consider your previous cup’s fit when choosing a size.

White-Label Menstrual Cup Brands
Some cups are manufactured by one company and sold under several brand names. Packaging may differ, while the cup design may be shared. We group verified designs rather than repeating the same comparison.
Casco Cup, Rael, Athena Club & UltuCup Compared With MeLuna
Manufactured in: United States
Casco Bay Molding has made menstrual cups sold under several brand names. If you're replacing a Casco Cup, Rael, Athena Club, or UltuCup, use the model names and side-by-side photographs below to compare the designs. Cup names alone don't tell you the rim diameter.
Which Casco model corresponds to my cup?
| Casco design | Rael | Athena Club | UltuCup |
|---|---|---|---|
| Mini 42 mm | Mini Documented model | — | Model 0 Possible match |
| Mid 1 42 mm | Size 1 Documented model | Size One Documented model | — |
| Mid 2 47 mm · No longer sold | Size 2 Documented model | Size Two Documented model | — |
| Standard 1 41 mm | — | — | Model 1 Physical design match |
| Standard 2 45 mm | — | — | Model 2 Physical design match |
About these matches: Rael and Athena Club model names are linked to Casco designs through device model records. We also compared actual Casco and UltuCup cups side by side and found matching shapes and rim diameters for Standard 1 / UltuCup 1 and Standard 2 / UltuCup 2. The Model 0 match remains tentative. These comparisons do not establish that every private-label version uses an identical mold.
Looking for Rael Size 2 or Athena Club Size Two? The corresponding Casco Mid 2 (47 mm) is no longer offered by Casco, Rael, or Athena Club. Remaining old stock may occasionally turn up, but there is no currently available retail version we can direct you to. MeLuna XL also measures 47 mm at the rim, although its height, shape, and firmness differ.
Casco cup diameters vs. MeLuna
Casco designs
MeLuna
Casco diameters are rounded from our physical cup measurements; MeLuna measurements are nominal rim diameters. Matching rim diameters do not mean identical fit.
Our photographs show the actual cups in ascending rim-diameter order. Where diameters match, the competitor cup appears before MeLuna. Compare cup height and shape as well as width; Casco Mid 2 is marked as no longer sold.
Which MeLuna Cup Should You Consider?
Your current cup gives you useful information. The problem you are experiencing can help identify which feature to change.
Your current cup feels too long
- Consider MeLuna Shorty for a low cervix.
- Compare cup body length, not only total length with the handle.
- A shorter cup may reduce poking or pressure.
Your cup is difficult to reach
- A Standard cup may suit an average or high cervix.
- A Ring Handle provides a secure grip.
- A Nupsi extension can add reach for a high cervix.
Your current cup leaks
- Confirm that the cup is fully open.
- Consider whether you need a larger diameter.
- Strong pelvic floor muscles may compress a cup that is too flexible.
Your cup leaks during exercise
- Consider MeLuna Sport.
- Its firmer material resists compression during high-impact movement.
- Sport can be harder to fold and remove than Classic.
You experienced irritation with silicone
- MeLuna is made from medical-grade TPE.
- TPE is a different material from silicone and latex.
- Stop use and seek medical advice if irritation or pain continues.
Your current cup creates bladder pressure
- Consider whether the cup is too long or too wide.
- A Shorty cup may help when cervix height is low.
- A different diameter may improve comfort.
What to Expect When Switching Menstrual Cup Brands
MeLuna is made from medical-grade TPE rather than silicone. The material may feel and behave differently from the cup you currently use. A short adjustment period is normal when changing cup shapes, firmness, or materials.
You May Not Feel a Strong Pop
Some silicone cups create a noticeable popping sensation when they open. A MeLuna cup may unfold without producing the same sensation.
Gently feel around the base to check that the cup has unfolded and is positioned comfortably.
A cup does not need to make a sound or create a strong pop to work correctly.
The Cup May Take On an Oval Shape
MeLuna cups are made from thermoplastic elastomer, or TPE. TPE responds to heat, including your natural body heat, and can gradually adapt to your body's shape during wear.
Because the vaginal canal is naturally more compressed than round, you may notice that your cup has taken on an oval or slightly asymmetrical shape when you remove it. This is normal.
Once your MeLuna has adapted to this shape, simply cooling the cup will not necessarily make it round again. It may remain oval until you wear it again, when body heat allows the material to adapt again. If you want to return the cup to a rounder shape, the heat used when boiling it for disinfection can help reshape the TPE.
An oval cup does not mean the cup is defective, and it does not cause leaking. The cup is sealing inside a vaginal canal that is itself compressed rather than perfectly round. If you are experiencing leaks, cup diameter and fit are more important factors to investigate than whether the cup looks round after removal.
Your Usual Fold May Feel Different
A fold that worked with your previous cup may behave differently with MeLuna. You may need to adjust the fold, insertion angle, or the point where you allow the cup to open.
Give yourself a few practice attempts before deciding whether the cup is the wrong fit.
Persistent Leaks Need Troubleshooting
Early leaks may result from placement, incomplete unfolding, cervix position, or cup size. Continued leaks may indicate that you need a different diameter, height, or firmness.
Your Previous Cup Size Does Not Equal a MeLuna Size
Cup size labels are not standardized between brands. A Small, Medium, or Large from another brand does not correspond to the same MeLuna size label.
MeLuna offers more size and fit combinations, including four diameters and two cup heights, so we use our own sizing system. When switching brands, compare the actual cup dimensions rather than the size name.
Start with diameter, then consider height and firmness.
Extra Fit Support Is Included
Switching brands can raise questions, especially when your new cup differs in shape, material, or firmness. Every eligible MeLuna cup includes our MeLuna USA Guarantee, so you can contact me for fit help and have additional options if a different MeLuna configuration is recommended.
Still Not Sure Which MeLuna to Choose?
You don't have to guess. Use the quiz for an immediate recommendation, or tell me about your current cup and I'll personally review what you would like to improve.