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We are sorry your last cup didn’t work out for you but super excited that you found us!

MeLuna Offers a Highly Customizable Menstrual Cup with many Size and Length Options

If you are coming here, it’s likely you have first tried a brand that only offers two cup sizes. The first brand to be widely available was Diva Cup. Many of the brands following like Lunette, Lena, Saalt, etc followed the system established by Diva menstrual cups.

Most of them are designated as pre-baby and post-baby sizes.

To make it easier to find your MeLuna size we have included the most common competitor’s brand, Diva, in our lineup here:

We are using the Diva cup 1 and 2 in this illustration simply because most other two-cup brands that followed, modeled their sizing after the Diva cup and are similar or even identical in diameter.

In other words brands like Saalt, Lunette and Lena have almost identical sizes in regards to diameter. We have therefore labeled the Diva cups in this lineup as generic ‘2-size brand’ because it will apply to so many! 

Most two size brands are modeled after the Diva Cup brand and will have similar diameter


Is your current diameter okay but the cup is too long?

If your current diameter seems to work out well but the cup protrudes or is uncomfortable at the vaginal entrance, you may be a great candidate for a low cervix cup. Learn more about them here.

Generally we would recommend going a size up, if you are switching to a shorty. For example coming from a Diva 2 that’s too long, your best choice may be the Shorty XL as it is significantly shorter while at the same time being just a tad wider.

A great way to get all the info needed to make a good recommendation to us is filling out our "Switching Brands Questionnaire"


Some Tips for Switching Menstrual Cup Brands

If you have worn your menstrual cup of a different brand for quite some time and it generally worked well, we do not recommend going down in size even if our general recommendations for new cup users suggest it.

For example if you had less than 2 vaginal births the new user suggestion for MeLuna would be size Large. If you have worn the Diva size 2 for several years and want to switch a MeLuna large would have a slightly smaller diameter than your existing cup.

A MeLuna XL could be a better choice in that case to avoid leaking due to insufficient diameter. Insufficient diameter is the most common cause of leaking. You can find more info in our blog post.

You can review all or our dimensions here:

Visual Menstrual Cup Comparisons

Many customers who are unhappy with their current cup find it helpful to see the cup next to a MeLuna.

To make it easier to differentiate we used all Sapphire blue MeLuna menstrual cups when standard length cups are shown and all Amethyst purple MeLuna menstrual cups when SHORTY MeLuna are shown

We are organizing the cups from smallest to largest DIAMETER.

If competitor diameter is the same as MeLuna diameter we are placing the competitor cup first. MeLuna cups come in 4 sizes (Small, Medium, Large and XL) so you will see 4 MeLuna cups in each line up.


Diva Cup (sizes 0, 1 & 2) compared to MeLuna Shorty Menstrual Cups

diva-cup-low-cervix-s-copy-1-.jpgDiva Cup (sizes 0, 1 & 2) compared to MeLuna Standard Menstrual Cups


Flex Cup (sizes slim & full) compared to MeLuna Shorty Menstrual Cups


Flex Cup (sizes slim & full) compared to MeLuna Standard Menstrual Cups




Lena Cup (sizes small & large) compared to MeLuna Shorty Menstrual Cups


Lena Cup (sizes small & large) compared to MeLuna Standard Menstrual Cups


Saalt Cup (sizes small & regular) compared to MeLuna Shorty Menstrual Cups


Saalt Cup (sizes small & regular) compared to MeLuna Standard Menstrual Cups