Relaunch 2026
Period swimwear
At Flow you will find period bikinis and period swimsuits designed to bring you a full deck of confidence when splashing around.
Our period swimwear looks and feels like regular swimwear – with the added bonus of discreet, built-in absorbent technology.
Choose from different fits and colors and find the model that suits your summer.
Read more about how to have the best vacation with your period here →
Designed for bloody days and big waves
Period swimwear
Why women choose our period swimwear
We have collected all of our learnings from the launch of our 2024 swim collection made together with Cartel - 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 your period
✓ Sewn in Portugal in exclusive Italian materials of ECONYL®
✓ Mix and match bikinis and swimsuits and create your favorite set
✓ Sizes from 2XS-3XL
If you are looking for period swimwear for kids and teens, find Johanne Bikini here →
Period swimwear
The nice to know and need to know
What is period swimwear?
Period swimwear is swimwear with built-in absorbent technology that makes it possible to swim safely during your period with light to moderate bleeding.
You know the absorbent technology from our period underwear, and with period swimwear it is added to the bottom of all all styles as well but in a quick-drying quality.
Read our guide to period 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 period 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
In 2026, Flow will relaunch period swimwear
How does period swimwear work?
Our period swimwear is designed with:
〰️ A soft layer close to the body that directs fluid down into the next layer
〰️ An absorbent core that stops bleeding
〰️ A water-repellent, breathable membrane that minimizes the risk of bleeding through
The material dries quickly and feels light – even after a trip in the water.
Read our full guide to period swimwear here →
How do I wash my period swimwear?
Before use: Wash your period 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 period 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 during your holiday?
Mix and match to suit your needs
Swimsuit or bikini?
When we first launched period 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:
〰️ Period bikinis offer flexibility and the opportunity to mix and match.
〰️ Period swimsuit provides extra coverage and support.
Both are designed to look like regular swimwear – no one can tell the difference.
We are making sure that great women in sports stay in our common memory and history books
The story behind the names
Our collection of period 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
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.
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