Forget the old guides that just ask your age or if you've given birth. Choosing a period product is first and foremost a matter of flow volume.
You wouldn't choose shoes based on your age, but on your shoe size. For La Cup Luneale, it's the same: we first look at what you lose.
Article Summary
Follow the arrows to find your ideal size in 30 seconds.
1- The Real Calculation: Absorption vs. Collection
Why does a cup last longer than a tampon? It's mechanical.
A tampon absorbs everything: blood, but also your protective vaginal secretions. It "wastes" its capacity by soaking up your natural moisture (which dries out the mucous membranes).
La Cup Luneale, on the other hand, only collects the menstrual flow. It only deals with blood. This is why, for the same size, its actual autonomy is much higher.
2- The 3 Sizes: Real Equivalents
Here is the capacity of our reservoirs and their real equivalent in number of tampons (based on a standard tampon that also absorbs secretions).
- La Cup Size S (20ml) = 4 Tampons.
Ideal for light to medium flows. - La Cup Size M (25ml) = 5 Tampons.
The versatile standard for medium to heavy flows. - La Cup Size L (30ml) = 6 Tampons.
For very heavy flows. It's the guarantee of peace of mind.
3- Table: Find Your Size (Tampons or Pads)
Find your current situation in this table. If you use pads, rely on the time it takes for them to overflow.
| Your current reference | Saturation frequency | Recommended Luneale Size |
|---|---|---|
| Regular Tampon or Suitable Pad |
Overflows after 6h (or never) | Size S (Enough to last the day) |
| Super Tampon or Suitable Pad |
Overflows between 3h and 6h | Size M (The best compromise) |
| Super+ Tampon or Night Pad |
Overflows in less than 3h | Size L (Maximum capacity) |
| Hemorrhagic Flow (Copper IUD / Endometriosis) |
Overflows in less than 1h | Size L (To be emptied more often, this is the maximum possible) |
4- The Childbirth Myth (and the Pelvic Floor Alert)
We often read: "If you have delivered vaginally, automatically take the large size." This is false, and potentially counterproductive.
The vagina is an elastic mucous membrane surrounded by muscles (the pelvic floor). At rest, its walls naturally touch, whether you have had a baby or not.
You do not choose a larger size "so that it stays in place." La Cup Luneale stays in place thanks to its design and the suction effect, not by forcing the walls apart.
If your pelvic floor is so relaxed that it does not hold a cup (slipping sensation), the solution is NOT to take a larger size to "plug the hole."
This is a warning sign. A relaxed pelvic floor can lead to urinary leakage or organ prolapse in the long term. The right reaction is to consult a professional for pelvic floor rehabilitation. Your health comes first.
5- Teens and Dyspareunia: Comfort First
There are cases where flow volume is not the only criterion:
- Young girls : Even if you have a heavy flow, starting with a large object (Size L) can be intimidating or uncomfortable to insert.
- Dyspareunia / Pain: If you experience pain during intercourse or upon insertion, comfort is the absolute priority.
Our advice: In these cases, opt for a Size S or M (thinner, easier to handle).
The compromise: You may have to empty it a little more often on heavy flow days, but you will gain in ease of insertion and psychological comfort.
Still hesitating? Our customer service knows these products by heart. Send us a message, we'll find your size together.
