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100% Satisfaction Guarantee

We'll guide you and give you a new pair of underwear - if that doesn't work either, you'll get your money back.

Loved by +20,000 women

We are created by menstruators
for menstruators.

4.7 on Trustpilot

"The best panties on the market!"

Buy 5 - save 20%

You can mix and match
according to your needs.

We deserve better

Why choose menstrual underwear from Flow?

After two fertility treatments and two births, I no longer wanted to use menstrual products that went inside my body - I wanted to be able to bleed in peace.

That was the beginning of Flow - the first menstrual underwear on the Danish market.

Today, we create menstrual underwear with a focus on comfort, quality, and responsible production - made by people who menstruate themselves.

✔️ Soft, skin-friendly materials
✔️ Different absorption levels
✔️ Comfort like regular underwear
✔️ A more environmentally friendly alternative to disposable products

Our mission is to make menstruation freer, safer, and less inconvenient - without compromising on style or function.

Kind regards, Cathrine

What we are most proud of

5 good reasons why you'll love us

THE HEART ALWAYS COMES FIRST

We are also here to make bigger changes than just in your everyday life.
Our founder changed Danish legislation in 2021 by removing the age limit for frozen eggs.
In 2025, we created the Red Flag campaign, which ensured the Danish women's national handball team the right to wear dark shorts during the World Cup. And we will continue.

SAFETY AND SECURITY IMMEDIATELY AFTER

Despite the lack of legislation and safety requirements for menstrual products in the EU, we do not shy away from our responsibility. We do not use PFAS, nano-silver - no magical "stay fresh" treatments of the absorbent layers. We third-party test our underwear for chemicals and use innovation without compromising your safety to eliminate odours.

PREMIUM PRODUCTION

We produce in Portugal, Denmark, Lithuania, and Turkey – always using the best materials such as organic cotton, organic merino wool, and ECONYL®.

Our partners are leaders in their respective fields, and several of our factories are GOTS-certified, which ensures high standards for employee welfare.

BY PEOPLE WHO MENSTRUATE, FOR PEOPLE WHO MENSTRUATE

We create products that we ourselves need - and we test them thoroughly (so yes, they are tested with real menstrual blood). In addition, we have a test panel consisting of hardcore and dedicated members from our community who take the task seriously.


Join here.

MORE THAN MENSTRUATION

We know. It's about much more than just menstruation. It's about a changing body – throughout the entire cycle, month after month.

That's why we are redefining what 'period products' are beyond just a practical solution. The best-rated absorbent underwear, yes, but also care that supports you and your body throughout your entire cycle.
This is Flow Cycle Routine.

Everyday Bra - Scoop - Flow Intimates
Everyday Bra - Scoop - Flow Intimates

FAQ

How long do period panties last?

The general expectation for the lifespan of socks and underwear is approximately 3 years. These are items of clothing that wear out and are used every day.

Since we do not add chemical treatment to the pad, no function is lost.

If you take good care of your period panties, washing them according to instructions, then the quality of our period panties is so good that you can easily use them for 3 years and even longer.

Here you can find our guide on how to best care for your period panties.

How do I choose the best fit for me?

We have menstrual panties that fit different bodies - whether you prefer a low rise, mid rise or high rise fit.

The Period Flow Brief and Period Flow Shorts both have a high waist, which is loved by many for the feeling of a hug around the belly.

Period Flow Cheeky has a more sporty look but with a wide and soft elastic at the waist - it is mid-rise.

Then we also have the classic low-waisted fit , which is a super nice, basic menstrual panty if discretion under the panty hem is *your thing*.

How long can I use them at a time?

It depends on your flow and your cycle day - as well as the absorbency of the panties.

But changing your menstrual panties at least morning and night is good hygiene - think of your absorbent underwear just like pads and tampons. They need to be changed every now and then.

But unlike tampons, for example, you are not at risk of Toxic Shock Syndrome, as menstrual panties are a non-invasive menstrual product.

Kundernes favoritter - her er vores mest populære produkter

Er du i tvivl om, hvor du skal starte?

Her har vi samlet de produkter, som vores kunder vender tilbage til igen og igen. Fra vores bedst bedømte menstruationstrusser og menstruationsbadetøj til absorberende undertøj, cykluspleje og hverdagsfavoritter.

Det er produkterne, som har gjort Flow til et af Danmarks mest populære brands inden for absorberende undertøj – udviklet af mennesker, der selv menstruerer, og skabt med fokus på komfort, kvalitet og gennemtænkte løsninger gennem hele cyklussen.

Kundernes favoritter – gennem hele cyklussen

Hver krop er forskellig, og derfor findes der ikke én model, der passer til alle.

Nogle elsker vores klassiske menstruationstrusser med høj talje, andre sværger til vores menstruationsshorts om natten eller vores absorberende g-streng til de lette dage. Derfor finder du her de produkter, som flest kvinder har valgt – og valgt igen.

Uanset om du leder efter din første menstruationstrusse, menstruationsbadetøj til sommerferien eller plejeprodukter til din cyklus, finder du vores mest populære valg samlet ét sted.

Hvorfor vælger så mange Flow?

Hos Flow udvikler vi produkter, vi selv har savnet.

Vi var de første til at introducere menstruationstrusser på det danske marked, og siden har vi arbejdet målrettet på at udvikle produkter, der kombinerer komfort, innovation og ansvarlige materialevalg.

Derfor er vores produkter blandt andet:

  • Udviklet af mennesker, der selv menstruerer

  • Fri for PFAS og biocider

  • Produceret hos specialiserede fabrikker i Europa

  • Designet til at ligne og føles som almindeligt undertøj

  • Testet og videreudviklet i tæt samarbejde med vores community

Find den model, der passer til dig

Vores mest populære produkter dækker forskellige behov gennem cyklussen:

  • Menstruationstrusser til let, moderat og kraftig menstruation

  • Menstruationsbadetøj, så du kan bade under menstruation

  • Absorberende undertøj til hverdagen

  • Postpartum-produkter til tiden efter fødslen

  • Flow Care, som støtter kroppen gennem hele cyklussen

Er du i tvivl om, hvilken model der passer bedst til dig? Se vores størrelsesguide eller læs vores guide til menstruationstrusser – så hjælper vi dig med at finde den helt rigtige løsning.

Mere end produkter

Flow handler ikke kun om menstruation.

Vi arbejder for, at flere kan føle sig trygge i deres egen krop – fra den første menstruation til overgangsalderen. Derfor udvikler vi ikke bare absorberende undertøj, men også viden, plejeprodukter og løsninger, der gør hverdagen lidt lettere.

Velkommen til de produkter, som vores kunder elsker allermest.

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