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What’s the best way to swim without leaks? We tested the teen menstrual swimsuit!

Written by: Camille Raynaud

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Published on

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Last updated on

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Time to read 12 min

The teen period swimsuit is a real game changer for all young girls, preteens and teens who have their period. Why? Because this washable, long-lasting period protection offers unparalleled freedom to enjoy the beach, pool and swimming!


Some people even cancel a trip to the pool because of their period! Fear of leaks, not wanting to use tampons—there are many reasons.


Recently, the period bikini or period swimsuit (one-piece or bikini bottoms) has gradually established itself as a reliable, effective and trustworthy alternative.
This innovative underwear, designed with eco-friendly materials and multi-layer technology, combines total discretion with maximum security, even when you’re on the move. Its waterproof membrane and absorbent capacity (equivalent to 2–3 tampons) ensure comfort and safety, with no risk of toxic shock syndrome. Ideal for active young people, it fits into a zero-waste approach and protects intimate health.


We explain everything about **teen menstrual swimwear**: tips for choosing the right one, how to use it and how to care for it. At the end of the article, check out the Louloucup teen swim range so you can enjoy your summer without stressing!

🩵 A revolution for teens: swimming on your period with total peace of mind

Comfort, practicality, and discretion, it's the winning trio that perfectly sums up menstrual swimwear. The menstrual swimsuit for teenagers is above all an excellent alternative to sanitary tampons. In short, find out here all the reasons why the menstrual bikini is a summer and vacation suitcase essential.

No more stressing about leaks at the pool or the beach

Who hasn’t dreaded going to the pool during their period? For teens, the fear of a visible string or a leak can ruin this precious moment of relaxation with friends or family. And that’s such a shame. More than that, it really shouldn’t happen!


The teen menstrual swimsuit revolutionizes this time of the month. Designed for young girls, it lets them swim without worry, whether it’s for swimming lessons, a day at the beach or pool, or an afternoon canoeing on the river—wherever! Period swimwear can be worn anywhere (in any water—salt, chlorinated or fresh) and for any activity (sunbathing, swimming, surfing, etc.).


As an alternative to internal protection (like tampons or cups), the bikini offers total freedom. No more juggling tampons. For teenagers experiencing their first period, managing those first cycles becomes much easier thanks to this swimsuit.


✅ Swim safely and with peace of mind.

The Louloucup teen period swimsuit range 🤩

Comfort, discretion and practicality: the keys to enjoying summer

The teen period swimsuit is all about simplicity. Its design is identical to a classic swimsuit, with no visible bulk or annoying seams. In short, it’s impossible to tell it apart from a regular swimsuit.


The benefits and reasons that might convince you to order a cute period swimsuit for this summer:

Total peace of mind: reliable leak protection so you can swim without a second thought.

Guaranteed discretion: a design that looks just like a regular swimsuit.

Freedom of movement: absolute comfort, with no discomfort from a string or tampon.

Healthy, eco-friendly solution: no chemicals, reusable for several years to reduce waste.

✅ Feeling confident in your swimsuit, feeling good and no longer suffering through your period on vacation.

Menstrual swimsuit vs. tampon: the ultimate swim showdown

To swim on your period, a period swimsuit beats a tampon. Here’s why:


Comparison: Period Swimwear vs. Tampons for Swimming

Features
Teen Menstrual Swimsuit
Tampon
Comfort in the water
Doesn’t swell, stays in place.
May swell and become uncomfortable.
Health risk
No risk of TSS, materials free from harmful substances.
Low but real risk of TSS + bad bacteria and moisture.
Convenience
Slip it on and forget about it for several hours.
Must be changed before/after swimming.
Discretion
Total. Indistinguishable from a regular swimsuit.
Risk that the string may be visible.
Environmental impact
Reusable, washable, zero waste.
Disposable, generates plastic waste.

The swimsuit eliminates health risks and awkward handling. Its OEKO-TEX-certified fabrics ensure safety and practicality. It combines innovation, comfort, and respect for the environment while replacing disposable products. Truly great news for our teenagers.


✅ A healthy, eco-friendly, zero-waste alternative that makes sense for your body, your health, and the planet. 

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🩵 Finding the perfect menstrual swimsuit: styles and tips for every teen

One-piece or bikini bottoms? Menstrual swim lingerie comes in different styles!

One-piece swimsuit or bikini bottoms: which style for which mood?

The choice between a one-piece swimsuit and bikini bottoms depends on your activities and personal preferences.


A one-piece is ideal for swimming or water sports thanks to its great support. It helps hold in a tummy that may be a bit bloated during your period and can also be worn as a bodysuit under a beach dress or sarong. In short, it’s a fantastic piece to have!

The bikini bottom or menstrual bikini brief is more versatile. You can pair it with an existing top for a personalized, mix-and-match look on beach or pool days.


The cuts vary: classic briefs prioritize comfort, mid-thigh shorties are great for water activities, and high-waisted styles provide shaping support.


Choose a style based on your tastes, your activities and also your body shape. Also keep in mind that textured fabrics (jacquard, honeycomb) help conceal the absorbent area, ensuring discretion.


And finally, one last tip: colors (black, prints) suit every personality. For sporty types, a one-piece is a must; for lounging, a two-piece combines practicality and style.

Choosing the right size and absorbency level: the keys to effectiveness

A good fit prevents leaks: a swimsuit that’s too loose won’t work, and one that’s too tight will irritate. Check the size guide, measuring your waist and hips before confirming your order. Adjustable features (ties, straps) are also great for getting the fit just right.


Absorbency is equivalent to 2 to 3 tampons. For heavier days, pair it with a cup. Heavy flows need extra protection to prevent leaks. Swimming time should be limited to 2 to 3 hours maximum, depending on the style.


Proper care extends its lifespan (5 to 10 years): rinse it in cold water after use, wash at a maximum of 30°C, and avoid the tumble dryer. The technologies used (waterproof layer, leak-proof barriers) ensure total protection. Reusable, this swimsuit is both eco-friendly and economical. Its discreet design boosts teenagers’ confidence, which is essential for their first experiences in the water.

“Amazing, my daughter was able to swim during her period with no leaks at all.”

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🩵 How does it work? The complete guide to use and care

An absorbent inner layer, a waterproof outer layer—how does a period swimsuit actually work? And how do you use it? Here’s some information and advice on wearing, caring for, washing, and storing it.

At the heart of the swimsuit: absorbent and waterproof technology

A period swimsuit is made up of three technical layers for optimal effectiveness.

The first layer, made from breathable fabric (75% polyamide, 25% elastane), wicks the blood towards the absorbent core. This OEKO-TEX®-certified material ensures optimal softness and quick fluid transfer, preventing any feeling of dampness.

The second layer, made of polyester and polyurethane, holds the equivalent of 2 to 3 tampons thanks to its micro‑perforated structure that filters and locks in blood. Its antibacterial properties help prevent odours, a major plus for teenagers.

The third layer, waterproof yet breathable, acts as an anti-leak barrier. Made from polyurethane, it blocks leaks in the water while wicking away body moisture. The outer fabric resists chlorine and sunscreen oils and provides UPF 50+ protection

No swelling in water, for discreet and comfortable wear. Its triple-security structure allows for prolonged use without altering its outer appearance, making it indistinguishable from a regular swimsuit.

How to use it: wearing your period swimsuit with total confidence

Easy to slip on, the swimsuit is used just like a regular one. For light to moderate flow, wear it on its own for up to 6 hours, or combine it with a cup/tampon for extra security. Its ergonomic cut (high waist, racerback) suits all body types, with leak-proof barriers at the thighs for reinforced protection.


After swimming, it stays comfortable on your towel.

Washing and maintaining your swimsuit: simple steps to make it last

To keep it effective, follow these steps:

  1. Rinse in cold water: Squeeze it until the water runs clear to prevent the blood from setting in. A quick rinse helps avoid stains and preserves the fibers.
  2. Wash at a maximum of 30°C: By hand or in the machine (in a laundry bag), with a mild, non-greasy soap. Avoid products containing glycerin, which clog the absorbent fibers.
  3. Avoid fabric softeners and hot water: they damage the waterproof membrane and reduce absorbency. Replace them with white vinegar, which is both economical and eco-friendly.
  4. Air-dry: Avoid tumble dryers and radiators to protect the materials. Drying flat helps preserve the elasticity of the seams.

A strict care routine extends its lifespan to 2–3 years (around 100 washes). Store it dry to prevent bacteria growth. For detailed advice, see our guide to caring for menstrual swimwear. Following these steps ensures performance and hygiene. Reusable, it cuts down on waste and saves money over time: an eco-friendly, economical alternative to disposable products.

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🩵 The Louloucup collection: period swimwear designed for teens

Why choose a Louloucup teen menstrual swimsuit?

Looking for a discreet, reliable solution so your teen can enjoy the beach or pool with total peace of mind? The Louloucup period swimsuit combines comfort, security and durability.


Made from OEKO‑TEX STANDARD 100 certified fabrics, it guarantees the absence of harmful substances for the skin and the environment – a key concern for parents who care about their children’s health. Its inner layer in OCS and GOTS certified organic cotton ensures optimal breathability, preventing irritation or chafing.


Vegan and cruelty‑free, it avoids silver nanoparticles and harsh chemicals, ensuring healthy contact with the skin.

Discover our must-have styles:

For teens who want both style and functionality, the Noa one-piece menstrual swimsuit is a must-have. Its sleek design with adjustable straps and low back is both elegant and flattering on different body types. Designed for light to medium flows, it lets you swim without fearing leaks thanks to a built-in absorbent system that stays thin and discreet. Its capacity, equivalent to 2 tampons, offers optimal security, ideal for unexpected bleeding. Its technical fabric efficiently absorbs flow without swelling, avoiding the dreaded “diaper” effect.


For more freedom, the Manon or Juliette menstrual bikini bottom offers a stylish alternative, with a PUL membrane that’s waterproof yet breathable.

Much more than a swimsuit: a complete solution for a first period

Choosing Louloucup means opting for products designed to support girls at every stage. As a complement to the swimsuit, period underwear for teens becomes an everyday ally, perfect for school, sports or nighttime. Certified free from toxic substances, it guarantees absolute comfort with no odour or irritation. 

Available from XXS to XXL, it suits all body types with styles like Lucie (medium flow), Simone (heavy flow) or Mathilde (very heavy flow). Washable and reusable, period panties last 5 to 7 years.


“Choosing Louloucup means giving your teen healthy, comfortable and eco-friendly solutions to experience her period with confidence and peace of mind, at the beach and in everyday life.”

🩵 To summarize: teen menstrual swimsuit

Louloucup offers a complete range for first periods: swimsuits as well as panties. With over 50,000 satisfied customers, Louloucup has established itself as a reference for reusable, economical, and eco-friendly period protection. An investment combining female well-being and ecological commitment for more conscious generations.

Combining practicality and style, comfort and absorbency, menstrual swimwear is a great alternative to tampons or cups for teens who want to avoid internal protection.


The Louloucup period swimsuit frees teens from all anxiety, combining:

  •  total comfort, 
  • total discretion 
  • and eco-friendly commitment.

Reusable and safe, it’s an innovative way to experience your period with total freedom. A welcome revolution for a calm, fulfilling teenagehood.

The teen menstrual swimsuit offers unparalleled freedom during periods, combining comfort, discretion, and safety. Designed to look like a classic swimsuit, it avoids the inconveniences of internal protection thanks to its absorbent, waterproof technology—ideal for swimming and water activities. 

Reusable and eco-friendly, it reduces the risks associated with tampons, such as toxic shock syndrome, while ensuring worry-free wear for several hours. With a variety of cuts to suit every style, it adjusts perfectly to every body shape and flow, making it a hygienic and economical solution for enjoying summer without constraints.

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FAQ: Teen menstrual swimsuit

Are period swimsuits really effective?

Yes, menstrual swimwear is designed with innovative technology for reliable protection. It features three layers: a wicking layer to draw blood away from the skin, an absorbent layer (equivalent to 2 to 3 tampons) and a waterproof membrane that prevents leaks. Materials such as bamboo or organic cotton are certified to Oeko-Tex Standard 100 to guarantee they’re free from harmful substances. Their effectiveness has been validated by rigorous testing, so you can swim with complete confidence.

Which washable, reusable period products are reimbursed by the French national health insurance? Which hygiene solutions are covered by complementary health insurance and private insurers in France? Do we have to shop in a pharmacy to benefit from this measure?

Absolutely! The teen styles combine safety and comfort. Their discreet design and absorbency level adapted to light to medium flow make them an ideal solution for occasional swims or short water activities. Thanks to their breathable, waterproof membrane, they provide a reliable barrier against leaks, while avoiding the “diaper” effect thanks to their thinness. Teens feel reassured, and so do parents!

Is it possible to swim in period swimwear?

Yes, that’s actually its main purpose! Unlike tampons, a menstrual swimsuit doesn’t retain water, eliminating the risk of toxic shock syndrome (TSS). Its outer layer is resistant to chlorine and salt water, while its absorbent system remains effective. It lets you swim, play or attend swimming lessons without interruption.

Can you wear period panties in the pool?

Standard period underwear is not suitable for swimming, as its absorbency is limited and water reduces its effectiveness. Menstrual swimsuits, on the other hand, like those from Louloucup, are specially designed for water activities. Their multi-layer structure and waterproof outer fabric ensure optimal leak protection, even when diving. Note: for heavy flows, it’s best to use them together with a cup for maximum security.

Can blood leak through a period swimsuit?

No, thanks to its triple-barrier technology. The middle layer holds the flow with absorbent fibers (bamboo, organic cotton), while the outer membrane prevents any leaks. Reinforced seams and snug edges also stop side leakage. If you’re unsure about how well it works, test it at home first to get used to it.


What are the best period swimwear options for teens?

The pieces in the Louloucup collection stand out for their quality and eco-conscious approach. The Noa one-piece swimsuit, for example, combines elegant style with enhanced absorption, ideal for swimming. The organic cotton bikini bottoms offer flexibility and discretion for beach days. All our designs are Oeko-Tex certified, free from PFAS and endocrine disruptors, and made to last up to 5 years with proper care.

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Camille

I’ve been writing for Louloucup for several years now, and I love chatting about everything from period panties to grandma’s remedies for easing period pain! Every week I share my favorites and inspirations with one goal in mind: finally experiencing calm, stress-free periods! 🩷

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A little dip while you’re on your period with a super‑comfy period swimsuit?