

Bikini top - Sidsel
Loved by +25,000 women
period swimwear is like flow period underwear sewn with a built-in bandage, consisting of a minimum of 3 technical layers, which directs liquid down into the bandage, absorbs the liquid and ensures that you do not bleed or drip through.
👉 You can read much more about how period swimwear works in the guide here.
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Want to know more about our menstrual swimwear?
Frequently asked questions
Feel free to take your regular size in your swimwear.
If you are between two sizes, we would suggest the smaller one, as the fabric can give when it is wet.
The suction power i period swimwear is mild to moderate.
If you bleed profusely, we would suggest that you combine with a cup or a disc.
Our swimwear is designed with a built-in absorbent layer that traps and encapsulates menstrual blood. This layer is combined with a waterproof but breathable membrane that prevents you from bleeding through while swimming or sunbathing.
The textiles are light and quick-drying, which ensures that you can move freely and feel dry shortly after being in the water.
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.
Bikini top - Seat with wide straps and square neckline
Bikini top Sidsel is an elegant bikini top with wide straps and a modern square neckline that gives a clean, timeless and flattering look. It is designed for those who want a bikini top with comfortable support and a secure fit - both when swimming, sunbathing and moving.
The top is made of exclusive Italian ECONYL® with 4-way stretch, which molds to the body and provides a soft, flexible fit all day.
Bikini top - Sidsel is a comfortable bikini top with support without underwire
Sidsel bikini top has been developed with a focus on natural support rather than underwires.
The wide straps distribute the weight comfortably over the shoulders, while the discreet elastic under the chest helps the top stay where it should. The lined front provides extra support and a nice fit, so you can feel comfortable - both in and out of the water.
The modern square neckline emphasizes the collarbone and shoulders and gives the top an elegant, Scandinavian look.
Italian quality with high comfort
Sidsel bikini top is sewn in exclusive Italian ECONYL®, a durable material with 4-way stretch, which provides high freedom of movement and a comfortable fit.
The material dries quickly, keeps its shape and is designed for many hours of use at the beach, pool or on holiday.
Made to match ours period bikini
Sidsel bikini top is designed as the perfect match for period bikini - Seat bikini briefs, but can also be combined with the other bikini briefs in our collection of period swimwear.
Mix and match models and colors so that you get a bikini set that suits both your style and your needs.
Our period bikini bottoms provide light to moderate protection period and can be combined with a menstrual cup or menstrual disk for extra security in case of heavier bleeding.
That's why many choose Sidsel bikini top
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Bikini top with wide straps for comfortable support
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Elegant square neckline
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Lined front for extra hold
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Discreet elastic under the chest
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Quick-drying material with 4-way stretch
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Matches period bikini - Seat bikini briefs
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Part of Flow's collection of period swimwear
Frequently asked questions
Does Sidsel Top provide good support?
Yes. The Sidsel Top is designed with wide straps, a discreet elastic under the chest and a lined front, which together provide a comfortable and natural support without underwire.
Does the top have hangers or inlays?
No. Sidsel Top is underwire-free and designed with a focus on comfort and a natural fit.
What material is the top made of?
The top is made of exclusive Italian fabric with 4-way stretch. The material dries quickly, keeps its shape and provides a high degree of freedom of movement.
Can I combine the top with other bikini bottoms?
Yes. Sidsel bikini top is designed to match Sidsel bikini briefs, but can also be mixed with the other bikini briefs in Flow's collection of period swimwear.
Can the top be used without period?
Yes. Sidsel bikini top is a regular bikini top and can be worn all summer – regardless of where you are in your cycle.
Who is the model suitable for?
Sidsel bikini top is a good choice if you prefer a bikini top with a little more coverage, wide straps and a supportive fit.


Who is it named after?
Material
Washing guide
How does it work?



