Classic High-Waisted Menstrual Briefs - Black
The Marie Fil menstrual underwear looks like a regular pair of women's panties, except it is perfectly adapted for periods. Indeed, this feminine menstrual protection allows women to lead an active life every week of the month... And all while being an eco-responsible alternative!
Menstrual underwear made in Quebec
Discreet lining in natural fibers
An absorbent lining is already present in the menstrual underwear to create a natural barrier for the panties. Although insufficient without a menstrual insert, it helps prevent surprises. The lining acts as a soft panty liner integrated into the menstrual underwear. It is longer at the front and back than standard sewing patterns to ensure perfect protection.
The lining is offered in two colors. Natural (color unbleached natural): for sensitive skin or skin prone to infections that allows you to see menstrual flow. Black: For easier maintenance since persistent stains are not visible.
Breathable and waterproof barrier inside the menstrual underwear
A breathable, waterproof barrier sewn into the underwear is made of a thin layer of 100% PUL. This makes the menstrual underwear invincible to any blood leaks trying to pass through it.
Light or heavy flow for a menstrual underwear?
The menstrual panties adapt well to all flows. For greater comfort, women with a heavy flow might prefer wearing a Diva Cup cup or of a menstrual disc. For light to medium flow, the menstrual underwear with 3 inserts is sufficient for daytime. The insert also allows you to change only the inner layer without having to change the underwear during the day.
Insert removable menstrual
It is possible to add a removable insert to the underwear to easily adapt to the menstrual cycle:
-
One insert by day or by night Marie thread (optional) :
- Ensure a double absorbent and waterproof protection thanks to its composition identical to the gusset of the menstrual underwear.
- Snaps onhyper thin, you won't feel them, promise!), to stay firmly in place no matter the activity.
- Interchangeable as many times as you want throughout your menstrual flow.
Wearing the Marie fil period underwear means choosing to be comfortable and confident in your own skin, whether you’re on your period or not. And together, more than ever, we’re helping make an important eco-responsible choice for the environment. 💚
Buy a washable Marie fil menstrual underwear
- 1 menstrual brief made in Quebec with love, for real (hello to my seamstresses Marie-Ève et Mounira💚)
- Optional: Day and/or night insert(s)
Composition of the menstrual panties
95% organic cotton
+
5% elastane
=
100% comfortable
Lining composition: What comes into contact with more sensitive areas
45% hemp*
+
55% organic cotton
=
100% natural
Why choose hemp?*
Hemp is the future for the environment. Its processing requires
very little water and no chemicals. That's why Marie prefers hemp to bamboo. This fabric also has several properties:
• Antibacterial to reduce odors
• Hypoallergenic to eliminate irritation
• Maximum absorption
• Soft when blended with cotton
Choose the right size for washable menstrual underwear:
Buying menstrual panties online can be complicated. Every woman deserves a proper fit and to be comfortable during her period. Here are a few tips regarding the Marie fil size chart.
Size chart for Marie fil menstrual underwear
Order the correct size of menstrual underwear by measuring your hips, above the buttocks, using a tape measure held parallel to the floor. If you’re between two sizes, choose the larger one. Periods often come with a bloated or sore stomach.
We're looking to get a comfortable period panty!

Return and Exchange Policy
Si jamais la culotte menstruelle ne convient pas malgré cette précaution, il est possible de l’échanger selon la return and exchange policy and in compliance with all of the following conditions:
- La menstrual underwear must not have been worn with another undergarment underneath for fitting.
- The menstrual underwear must not have been washed or used.
- The menstrual underwear must be returned in the same condition in which it was sent to you.
Still undecided? Visit the most frequently asked questions about menstrual panties.