Hvordan virker en menstruationsbikini?

Ragnhild bikinitrusse har en diskret absorberende kile med tre funktionelle lag, der beskytter under menstruationen, samtidig med at den bevarer sit elegante udtryk.

Bikinitop med bindebånd - Ragnhild - Flow Intimates

SWIM

Period bikini - Ragnhild briefs

Absorbency

649,00 kr

Bathing during your period? You bet! Ragnhild bikini briefs have a high waist, made of durable ECONYL® with a lining and elegant flattering ruching at the back.

✓ Super beautiful, hugs the body
✓ Built-in absorbent technology (3 layers)
✓ Can be used throughout the cycle – even without menstruation
✓ Dries quickly and stays securely in place
✓ Made of exclusive Italian ECONYL®

Color: Nero

Elsket af +25.000 kvinder

Tilfredshedsgaranti

Who is it named after?

Ragnhild Bikini is named after Ragnhild 'The Golden Torpedo' Hveger. Known for her uncompromising strength and courage in the water. With world records in the 1930s and a will that carried her through both sport and resistance, she became a symbol of female power in motion.

Material

Outer:78% ECONYL® regenerated PA + 22% elastane
Absorbent layer:100% polyester
Membrane:100% polyamide

Washing guide

1. If you have bled in your menstrual swimwear, rinse them in cold water until it runs clear.

2. Protect your swimwear in a laundry bag and wash your panties with similar colors at 30-40 degrees.
Tip: You can wash withour Allergy Certified special detergent Bloody Clean.

3. Dry it inside out on a clothesline - and you're good to go again.

👉 Read the wholeour guide on how to take good care of your swimwear here.

How does it work?

Menstrual swimwear, like Flow menstrual panties, is sewn with a built-in pad, consisting of a minimum of 3 technical layers that direct fluid into the pad, absorb the fluid and ensure that you do not bleed or leak through.

👉 You can read much more about how menstrual swimwear works in the guide here.

Menstruationsbadedragt - Jenny - Flow Intimates

Absorbent technology you know

At the bottom of your period bikini or swimsuit, you'll find our familiar absorbent technology, but in quick-drying materials. Discreet – no one can tell.

The water pressure against the body helps

When you are in the water, the pressure from the water will also slow down the blood's exit from your body – with period swimwear, you are extra secure.

Blood in, water out

Your swimwear should fit snugly - this keeps blood in and water out. If you bleed heavily, you can combine it with a cup or disc - change and rinse your swimwear bottom just like your period underwear.

Worry-free bathing

Now you can jump in the water and feel a little safer while doing so.

Enjoy.

Flow's founder

Relaunch of Period Swimwear 2026

"Period swimwear is back! We've spent two years perfecting the fit and materials (we've chosen the best Italian fabrics).

Last summer, I tested the function and fit. I'm not usually a water baby, but of course, the samples I had in my suitcase had to pass their big test.

They passed with flying colours. I felt safe, comfortable - and chic. I'm incredibly excited to see you in the swimwear on the beach, by the pool, in gardens".

- Cathrine

Read our guide to menstrual swimwear

5 stars: 8 (100%)
4 stars: 0 (0%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

Some of the reviews shown are from related products the merchant grouped with this one.

Endelig!

Har aldrig kunne bruge tampon/kop, og med den her bikini kan jeg ENDELIG bade, når jeg har menstruation 🙏:skin-tone-2: Bikinien er den smukkeste blå, og trusserne sidder så godt, at selv om man er oppustet, sidder de behageligt og flot.
Meget glad for købet og håber på en badedragt til næste år :hand_with_index_and_middle_fingers_crossed::skin-tone-2::u1F973:

Levede helt op til forventningerne

Sidder godt - men stramt omkring lår naturligvis. Holdt mig tryg under hele ferien med familien. Kæmpe anbefaling.

Frihed!

Jeg købte bikinitrusserne til min teenagedatter forud for vores sommerferie og det gav hende præcis den mængde frihed og tryghed, jeg havde håbet! Selvom menstruationen kom midt på badeferien, var hun med os i vandet hver dag og skænkede ikke blodet mange tanker. På de sidste ferier har hun ikke badet i 5-6 dage, så det var en kæmpe forskel! Fantastisk produkt!

HURRA

De fungerer bare. I hvert fald i dagene uden kraftig blødning, der vil jeg nok stadig supplere med kop (eller tampon). Og så er de super pæne og sidder godt :)

Rigtig gode

Meget flotte og sidder rigtig godt. Holdte tæt. De er våde i lang tid af badevand og føles lidt som ble, men dette kan ikke ses og tænker ikke det kan være anderledes. Er meget glade for mine og meget befriende, at jeg nu altid kan bade - også selvom jeg har menstruation - tak for det.

En længeventet løsning, der lever op til forventingerne

TAK! Bare tak for at have lavet disse behagelige trusser, som gør det muligt at tage komfortabelt på stranden, i spa og på ferie uden bekymringer og bøvl 😍🙌

Virkelig godt produkt

Jeg har længe set frem til, at dette produkt kom på markedet 😊

Want to know more about our menstrual swimwear?

Frequently asked questions

Which size should I choose?

Please wear your regular size in your swimwear.
If you are between two sizes, we would suggest the smaller one, as the fabric can stretch when wet.

How much blood can it absorb?

The absorbency of menstrual swimwear is light to moderate.

If you are bleeding heavily, we suggest that you combine it with a cup or a disk.

How do they work?

Our swimwear is designed with a built-in, absorbent layer that captures and encapsulates menstrual blood. This layer is combined with a waterproof yet breathable membrane that prevents you from bleeding through while swimming or sunbathing.

The textiles are light and quick-drying, ensuring that you can move freely and feel dry shortly after being in the water.

How do I wash menstrual swimwear?

1. If you have bled in your menstrual swimwear, rinse them in cold water until it runs clear.

2. Protect your swimwear in a laundry bag and wash your panties with similar colors at 30-40 degrees.
Tip: You can wash with our Allergy Certified special detergent Bloody Clean .

3. Dry them inside out on a clothesline - and you're good to go again.

👉 Read our full guide on how to take good care of your swimwear here.

period bikini - Ragnhild

Ragnhild bikini briefs are an elegant period bikini with a simple, timeless design. It is created for those who want a classic bikini bottom with discreet protection during menstruation - without compromising on comfort or style.

The minimalist design hides the most important thing: a sewn-in absorbent panel with three functional layers that protects against light to moderate bleeding. From the outside, the Ragnhild bikini bottom looks and feels like a regular bikini.

How does one work? period bikini?

Ragnhild bikini briefs are designed with a discreet absorbent gusset, which is integrated directly into the bikini briefs. The three functional layers help protect during menstruation, while the bikini retains its elegant look and light feel.

The snug fit provides extra security when bathing, swimming or relaxing by the pool.

At stronger period Ragnhild Bottom can be combined with a menstrual cup or menstrual disc for extra protection.

Designed for your entire cycle

One period bikini is not just for the days when you have period.

Ragnhild bikini bottoms can be worn all month long and work just like a regular bikini, making them an ideal choice for beach trips, vacations, wellness and swimming – no matter where you are in your cycle.

Italian quality with a focus on comfort

Ragnhild bikini bottoms are made from an exclusive Italian swimwear fabric with 4-way stretch, which provides a soft and flexible fit. The material follows the body's movements, dries quickly and holds its shape, so the bikini feels comfortable both in and out of the water.

The classic design makes it easy to combine with our bikini tops, so you can create a bikini set that suits your personal style.

That's why many choose Ragnhild bikini bottoms

period bikini with discreet three-layer absorbent technology
Protects against light to moderate period
Can be used throughout the cycle – even without period
Classic and timeless design
Looks and feels like a regular bikini
Quick-drying Italian fabric with 4-way stretch
Comfortable fit with good freedom of movement

Match with the rest of our period swimwear

Ragnhild bikini bottom is part of Flow's collection of period swimwear and can be matched with the Ragnhild Bikini Top or combined with the other bikini tops in the collection.

The entire series is developed with a focus on comfort, function and timeless design, so you can bathe, swim and enjoy the summer with greater freedom – even during your period.

Through the bloody hustle

we're right there with you