Designed for bloody days and big waves
Menstrual swimwear
Why women choose our menstrual swimwear
We have taken all the best lessons from our 2024 swim collection and made it even better for our relaunch in summer 2026.
You get premium materials, beautiful details and swimwear you can wear whether you're bleeding or not.
✓ Built-in 3-layer absorbent technology with protective membrane
✓ Suitable for light to moderate bleeding
✓ Can be used throughout the cycle – even without menstruation
✓ Sewn in Portugal in exclusive Italian materials such as ECONYL®
✓ Mix and match bikinis and swimsuits and create your favorite set
✓ Sizes from 2XS-3XL
If you are looking for menstrual swimwear for children and teens, find Johanne Bikini here →
Menstrual swimwear
The nice to know and need to know
What is menstrual swimwear?
Menstrual swimwear is swimwear with built-in absorbent technology that makes it possible to swim safely during menstruation with light to moderate bleeding.
You know our absorbent technology from our menstrual panties, which are added to the bottom of the swimsuit in a quick-drying quality.
Read our guide to menstrual swimwear here and learn how it works →
Which style should I choose?
We will launch a large swim collection in 2026, which will include both menstrual swimsuits and bikinis.
You can choose between different fits, colors and materials. Enjoy!
What do you get with your purchase?
Each Period Swim style is packaged in a small resealable bag that you can store and use on the go when your swimwear is wet.
We can also recommend buying Bloody Clean, which is a special detergent that super gently washes your swimwear clean and removes any odor.
We also have it in travel size, find Bloody Clean here →
First drop of the season: Jenny Swimsuit
News of 2026
How do I wash my menstrual swimwear?
Before use: Wash your menstrual swimwear at 30-40 degrees before using it.
Step 2: Wet directly into your swimsuit when you have your period
Step 3: Rinse the pad in your menstrual swimsuit by hand after use until the water runs clear.
Step 4: Put the swimsuit in a laundry bag and wash with similar colors at 30-40 degrees and let it air dry inside out.
Need to do laundry on vacation?
Mix and match to suit your needs
Swimsuit or bikini?
When we first launched menstrual swimwear on the Danish market in 2024, we only launched one bikini - it sold out before the summer was over.
Now we are expanding with more fits, materials and cuts:
〰️ Menstrual bikinis offer flexibility and the opportunity to mix and match.
〰️ Menstrual swimsuit provides extra coverage and support.
Both are designed to look like regular swimwear – no one can tell the difference.
We write women into history
The story behind the names
Our collection of menstrual swimwear is named after amazing athletes who have won both medals and hearts.
Under each style you can read more about each female athlete.
Jenny Swimsuit
Jenny Swimsuit is named after Jenny Kammersgaard.
Johanne Bikini
Johanne Bikini is named after Johanne Øland Frøkjær.
Ragnhild Bikini
The Ragnhild Bikini is named after Ragnhild 'The Golden Torpedo' Hveger.
Bikini
Sidsel Bikini is named after Sidsel Jørgensen.
Sara Bikini
Sara Bikini is named after Sara Nielsen.
period swimsuit – Bathe safely underneath period
One period swimsuit makes it possible to bathe, swim and enjoy the summer – even when you have period.
At flow you will find menstrual swimwear with discreet, built-in absorbent technology that protects against light to moderate bleeding. From the outside, they look like ordinary bathing suits. Inside is hidden our 3-layer absorbent technology, which gives you extra security both in the water and on land.
How does one work period swimsuit?
One period swimsuit has a discreet absorbent panel sewn directly into the swimsuit.
The panel consists of three functional layers that help protect during menstruation, while the swimsuit maintains its elegant look and comfortable fit.
Our menstrual swimwear is designed for light to moderate wear period. If you have heavier bleeding, we recommend combining the swimsuit with a menstrual cup or menstrual disk for extra security.
Looks like regular swimwear - because it has to feel that way too
We believe that period swimwear first is really good when you forget you're wearing it.
That's why our menstrual swimsuits are designed in exclusive Italian materials with 4-way stretch, which follow the body's movements and dry quickly after a trip in the water.
You can use your bathing suit all summer - even on days when you don't have one period.
That's why women choose flow
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period swimsuit with built-in 3-layer absorbent technology
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Protects wood light to moderate period
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Can be used throughout the cycle - also without period
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Manufactured in exclusive Italian materials
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Quick-drying quality with high comfort
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Produced in Portugal
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Free of PFAS and biocides
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Designed to look and feel like regular swimwear
Which one period swimsuit should I choose?
Our collection includes different fits, so you can find the model that best suits your body and your preferences.
If you want a classic and elegant expression, er Jenny our iconic period swimsuit with a deep back and flattering seams under the bust. It combines a timeless design with discreet protection and has been developed for women who want comfort without compromising on aesthetics.
More freedom in the water
Too many people skip the beach, the pool or the swimming pool because period.
At flow we believe that your cycle should not decide whether you say yes to a swim with friends, a holiday by the sea or an afternoon at the swimming pool.
That's why we've developed menstrual swimsuits that allow you to move freely - with greater security throughout the summer.
Do you prefer a bikini? See our period bikinis here.
Frequently asked questions
What is a period swimsuit?
One period swimsuit is a swimsuit with a discreet built-in absorbent panel, which makes it possible to swim underneath period with light to moderate bleeding.
Can you swim with one period swimsuit?
Yes. The menstrual swimsuit has been developed for use both in the water and on land, so you can bathe, swim and be active during your period.
Can I use the bathing suit without it? period?
Yes. Our menstrual swimsuits work exactly like regular swimsuits and can be used all summer - even when you don't have one period.
What if I bleed heavily?
By strong period we recommend combining the swimsuit with a menstrual cup or menstrual disk for extra protection.
How quickly does the swimsuit dry?
Our menstrual swimsuits are made from quick-drying Italian materials with high comfort both in and out of the water.
How do I wash my period swimsuit?
Rinse the swimsuit in cold water after use, wash it at 30-40 degrees without fabric softener and let it air dry to maintain the absorbent properties.
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