Menstrual bikini bottom - Spruce
The Marie Fil menstrual swimsuit looks like a regular swimsuit. It therefore allows swimming during menstruation and provides effective menstrual protection. The menstrual swim bottoms are discreet and leak-free.
Menstrual and eco-friendly swim brief
The bottom of my menstrual swimsuit is made in an eco-responsible way, but that doesn’t take away from its reliability! Women can still trust it with their eyes closed, thanks to:
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An absorbent lining black integrated permanently at the gusset level
- hyper discreet
- absorbent quickly le sang menstruel without inflating in water
- hiding a thin waterproof layer for watertight protection without risk of leakage into the water or through the swimsuit
Menstrual swimsuit suitable for all flows
The menstrual swimsuit can be used with a light flow. Have a heavier flow? Know that it works wonderfully with a menstrual cup.
Swim despite the rules
Women often like to enjoy the water or sun for long periods. That's why the swimsuit includes snap fasteners* located on the inside to add absorbent inserts during the day. This insert will act like a washable sanitary pad to protect the outside from water:
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A insert
- included with the jersey, both inside a waterproof pouch that’s super convenient for transport
- composed of same absorbent fabric that used for the lining at the gusset level
- interchangeable as many times as you want throughout your menstrual flow.
Discrete snap buttons
- ultra-thin (so you'll never feel or see them through your swimsuit)
- in plastic (to prevent rusting due to moisture)
Eco-responsible company committed to the environment
Wear the menstrual swimsuit Marie fil means choosing to be comfortable and at ease in our own skin, in water or not, menstruating or not. It also means making a positive difference both in your life and for the environment. 💚
The features of the Marie menstrual swimwear bottom fil
Includes:
- 1 swimsuit bottom, Épinette style (regular size) in black on the outside (In the photo, Annabelle is wearing size Large)
- 1 interchangeable insert
- 1 waterproof pouch (wetbag) 9'' x 9''
All of this, made with love in Quebec, for real (hello to my seamstresses Marie-Ève, Mégane and Andréanne 💚)
The panties:
made with OEKO-TEX®* fabric, fully lined (to provide absolute support and maintain excellent opacity over the long term)
*OEKO-TEX® fabric has it all:
- pilling-, chlorine- and sunscreen-resistant
- soft and stretchy in both directions
- offering UV protection (SPF 50+).
The absorbent lining (at the gusset) + the interchangeable insert
Composition:
Bottom swimwear size chart
Buying a menstrual swimsuit online isn't easy. You never know if the fit about us will be good. That is why Marie fil offers you this size chart. To order the correct size, measure the widest part of your hips using a tape measure held parallel to the floor.
A good measurement ensures a swimsuit fits properly at the waist!

Exchange Policy
If the jersey still doesn't fit despite this precaution, it can be exchanged according to the return and exchange policy and in compliance with all of the following conditions:
- The jersey must not have been worn without another undergarment underneath for trying on.
- Il must not have been washed or used.
- It must be returned in the same condition in which it was sent to you.
Are you still hesitating? I answer the most frequently asked questions right here here.
If needed, you can add absorbent and waterproof inserts here.
