Period bikini - Sissel brief

Name: Menstruationsbikini – Sidsel-Bikiniunterteil
Brand: Flow Intimates
SKU: 3202-ECN-CAP-2XS
Price: 479.2 DKK
Availability: InStock

Absorbency

479,20 kr

FORUDBESTIL SENDES 3. JULI

Bathing during your period? You bet! Sidsel is a high-waisted brief, sewn from nostalgic crinkled fabric with a flattering and comfortable fit.

✓ Built-in absorbent technology (3 layers)
✓ Protects during light to moderate bleeding
✓ Can be worn throughout your cycle – even when not menstruating
✓ Looks and feels like regular bikini bottoms
✓ Dries quickly and stays securely in place
✓ Made from exclusive Italian 4-way stretch fabric
✓ Sidsel Bottom is lined for extra support
✓ Style name: Period Flow Bikini - Sidsel bottom

Color: Caprice

Vorbestellung

Your order will be shipped end of week 28 - if you buy multiple items, they will be shipped together.

Why you'll love this style

WHO IS IT NAMED AFTER?

Sidsel Bikini is named after Sidsel Jørgensen — one half of an iconic Danish rhythmic swimming duo (formerly called synchronized swimming) from northern Jutland, who won medals in the 2000s.

MATERIAL

Outer: 93% polyester + 7% elastaneAbsorbent layer:100% polyesterMembrane:100% polyamide

WASHING GUIDE

Rinse - wash - wear - repeat

1. If you've bled in your period swimwear, rinse them in cold water until the water runs clear.

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

3. Dry it 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.

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.

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.

Bikinitop med bindebånd - Ragnhild - Flow Intimates

Menstruationsbadedragt - Jenny - Flow Intimates

Menstruationsbikini - Sidsel bikinitrusse - Flow Intimates

Menstruationsbikini - Sara bikinitrusse - Flow Intimates

Flow's founder

Relaunch of Period Swimwear 2026

„Bademode für Menstruationsbetroffene ist zurück! Wir haben zwei Jahre lang an der Passform und den Materialien getüftelt (wir haben die besten italienischen Stoffe ausgewählt).“

Letzten Sommer habe ich Funktion und Passform getestet. Ich bin zwar kein Wasserratte, aber die Exemplare in meinem Koffer mussten sich natürlich im Langzeittest bewähren.

Sie haben die UG bestanden. Ich habe mich sicher, wohl und köstlich gefühlt. Ich freue mich unglaublich darauf, euch in euren Badeanzügen am Strand, am Pool und in den Gärten zu sehen.

- Catherine

Lesen Sie unseren Ratgeber für Menstruationsbademode

Möchten Sie mehr über unsere Menstruationsbademode erfahren?

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. Falls Sie in Ihrer Menstruationsbadebekleidung geblutet haben, spülen Sie diese mit kaltem Wasser aus, bis das Wasser klar ist.

2. Schützen Sie Ihre Badebekleidung in einem Wäschesack und waschen Sie Ihre Unterwäsche mit ähnlichen Farben bei 30-40 Grad.
Tipp: Sie können damit waschen Unser allergiegeprüftes Spezialwaschmittel Bloody CleanDie

3. Trocknen Sie sie auf links gedreht an einer Wäscheleine – und schon können Sie sie wieder verwenden.

👉 Lies den ganzen Text Unsere Anleitung zur richtigen Pflege Ihrer Bademode finden Sie hier.

Through the bloody hustle

Wir stehen voll und ganz hinter dir.

Period bikini - Sissel brief

Bathing during your period? You bet! Sidsel is a high-waisted brief, sewn from nostalgic crinkled fabric with a flattering and comfortable fit.

Customer Reviews

Frequently asked questions

SAVE 12% ON YOUR FIRST ORDER

We write newsletters with the utmost care. Filled with cycle knowledge, stories that spark curiosity, and small notes from our founder. You will also be the first to receive news about launches, great discounts, and upcoming events.

We write newsletters with the utmost care. Filled with cycle knowledge, stories that spark curiosity, and small notes from our founder.
You will also be the first to receive news about launches, great discounts, and upcoming events.