Menstrual cup sizing: how to choose?

For lots of different reasons, you’re interested in a menstrual cup? You’ve made the right choice! This washable, long-lasting internal period protection has so many great advantages. Affordable, eco-friendly, easy to use and care for, and suitable even for very heavy flows, the menstrual cup is winning over more and more women. This small funnel-shaped device made from medical-grade silicone, this little upside-down bell, collects your period blood very efficiently and, in the end, very simply. Still unsure about the model, size, or firmness? Louloucup, a French menstrual cup brand, offers two clearly distinct sizes: size S (small) and size M (medium). There are also two firmness options: a soft turquoise cup and a firmer pink cup. How do you choose? We’ll walk you through it all! Before going any further, take a look at our very comprehensive menstrual cup guide. Tests, reviews, purchase, price, care, use, cleaning, sterilisation, panty+cup bundles, habits—this in-depth article was written to answer all your doubts and questions. Don’t hesitate to check it out; it’s a goldmine of information!

To find your cup size, you need to ask yourself the right questions

To choose the right size menstrual cup, you need to ask yourself a few questions.
Think about your menstrual flow. Would you describe it as light, medium, heavy or very heavy?

As for your pelvic floor, do you think it’s toned, muscular? If you’ve given birth, was it vaginal? Do you do intense physical or sports activities?

These questions will help you select the cup that’s best suited to each woman and girl. On top of that, this period product is a great way to learn more about your intimate health and the intensity of your periods.

coupes menstruelles Louloucup taille

Size and flexibility—tell them apart, choose well, and find your way!

Size S pink? Size M blue? Size S blue? Size M pink? How to choose the right Loulou? Don’t worry, it’s actually quite simple to figure out.

Louloucup offers its two cup models, the pink and the turquoise, in two different sizes: a size S and a size M.

Small or medium menstrual cup

The size S is especially suited to young girls and women with a light to medium flow. The Loulou small menstrual cup is just a little smaller and therefore holds less blood than the medium.

The size M is better for young girls and women with a medium to heavy flow. The Loulou medium menstrual cup corresponds to a standard, universal size.

However, be careful, the nature of your menstrual flow isn’t the only factor to consider when choosing your cup. You mustn’t forget your anatomy.

Size S is ideal for young girls with a toned pelvic floor, while size M will be perfect for women with a less toned, more relaxed pelvic floor.

Pink or blue menstrual cup

We want to draw your attention to the importance of flexibility when choosing your cup; it’s just as important as size. At Loulou, the cups come in two levels of flexibility represented by two colors: turquoise or pink.

The turquoise cup is very soft. It’s perfect for women and young girls with a particularly sensitive vagina.

The pink cup is slightly firmer. It’s ideal for sporty women, for example. Swimmers will tell you the same!  


We help you make the right choice

Here’s what we recommend:

  • a turquoise size S cup for girls, teenagers and young women who haven’t given birth vaginally.
  • a pink size M cup for sporty women or women who have given birth vaginally, as well as for women and girls with a heavy or very heavy menstrual flow.
  • a turquoise size S cup for girls or young women with a light to medium flow who have some sensitivity in the vagina or bladder.
  • an M-size turquoise cup for girls or young women with a fairly heavy flow who have never given birth.
  • an S-size pink cup for women who have already given birth vaginally but have a light flow.

Don’t forget, it’s practical to have two cups so you can alternate and not get stuck. Also combine a cup with period panties in your menstrual routine. These are especially ideal at night.


What precautions should you take when using a menstrual cup? 

Before using a cup, you need to follow several important precautions. Nothing complicated. Hygiene, techniques, habits—just follow the steps:

  • You need to know how to clean and sterilize it: Sterilizing your cup: 2 ways to sterilize your cup
  • You should not wear a menstrual cup for more than 6 hours. Indeed, prolonged use of intravaginal sanitary protection can, in some cases, cause toxic shock syndrome (TSS). This is a rare infectious disease that can occur in women carrying the S. aureus bacteria that secrete TSST-1 toxins. Therefore, we advise against using a cup at night. We invite you to turn to period panties for a peaceful, leak-free night! Is it possible to sleep in period panties?