Compare Menstrual Cup Brands: Diva, Saalt, Lena, Flex and More

Find the Best Menstrual Cup for Your Body

Struggling to find the right menstrual cup? You’re not alone, and you’re in the right place.

Whether your first experience with a menstrual cup was frustrating or you’re just not quite satisfied, we’re here to help guide you to a better fit.

First of All: Thank You!

We appreciate you sticking with it. Menstrual cups can be life-changing once you find the right one. This page is designed to help you discover your ideal fit with visual comparisons and personalized guidance.

Why So Many Cups Feel the Same (and Why That Might Not Work for You)

The first widely available menstrual cup was the Diva Cup. Many brands that followed, such as Lunette, Lena, and Saalt, adopted similar sizing systems based on age or childbirth history (for example, “under 30/no births” or “over 30/post-birth”).

Your body is more unique than a simple label. These general size categories don’t work for everyone, which is why many users experience leaks or discomfort with mainstream brands.

MeLuna vs. Diva: Size Comparison

To help you understand how MeLuna fits compared to other cups, we’ve included visual side-by-side diameter comparisons, including Diva Cup sizes 1 and 2, which many brands mimic in sizing.

Menstrual cup diameter comparison showing Diva Cup and MeLuna
Menstrual cup diameter comparison: Diva Cup vs MeLuna
“Brands like Lunette, Lena, and Saalt are often nearly identical in diameter to the Diva Cup, so if you’ve tried one, this comparison can help you find your MeLuna match.”

Does Your Cup Feel Too Long?

If your cup’s diameter feels fine but it pokes or feels uncomfortable near the vaginal opening, a low cervix (Shorty) cup could be the answer.

Fit tip: When switching to a Shorty, size up to maintain capacity.
Example: If your Diva 2 feels too long, try MeLuna Shorty XL. If Diva 2 also felt too wide, try Shorty Large.

Too Narrow? Too Wide? Why Diameter Matters

Menstrual cups with only two or three size options can be limiting. MeLuna offers four diameters: Small, Medium, Large, and XL, plus Shorty versions for low cervix users, giving you a more precise and comfortable fit.

  • Too narrow: May cause leaks.
  • Too wide: May be difficult to unfold or feel uncomfortable.

Switching from Another Brand? Here’s What to Know

If you’ve used another brand successfully, don’t automatically size down based on general new-user guides. For example, MeLuna’s general suggestion for someone with fewer than two vaginal births is a Large, but if you used a Diva 2, a MeLuna XL may be a better match to maintain a proper seal.

MeLuna sizing chart comparing popular menstrual cup brands
Suggested MeLuna sizes based on the common cup issues, also considering your flow: light, average or heavy.
MeLuna sizing chart based on flow and birth and age
Understanding your current cup and the issues you're facing can influence the recommendations beyond our standard sizes listed above.

Visual Menstrual Cup Comparisons

Seeing your current cup side by side with MeLuna sizes can make choosing easier. To help, our comparison visuals use color-coded MeLuna cups. (Of course all models are available in all colors):

  • Standard Length MeLuna: Sapphire Blue
  • Shorty MeLuna: Amethyst Purple

All cups are arranged from smallest to largest diameter. If a competitor’s cup matches a MeLuna size, you’ll see them side by side.