culotte de bain menstruelle

For this summer, choose period swim bottoms!

Written by: Camille Raynaud

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Published on

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Last updated on

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Time to read 11 min

Summer is coming! Holidays, the beach, the pool and lazy days should never be cancelled, postponed or delayed because of our periods. Never!

Fed up with using irritating tampons with questionable ingredients just so you can swim? Want to enjoy the water without overthinking it or worrying about leaks?

Discover the period swim bottom, a comfortable and eco-friendly alternative to traditional period products. This women’s bikini or period swimsuit is a safe, sustainable and cost‑effective option compared with disposable tampons. And don’t confuse a waterproof, leakproof period swim bottom designed for swimming with a regular, everyday period panty. They’re two very different types of protection!

Let us tell you more about this perfect ally for all your future swims! 💦

I. Discover the menstrual swim bottom and how it works

👙 What is period swimwear?

A period swim bottom is a bikini bottom specially designed to be worn during your period when you’re in the water. Unlike a regular period panty, it’s suitable for swimming thanks to its leakproof structure and built-in absorbent system.

It looks just like a regular bikini bottom, with one key difference: an absorbent membrane is sewn into the lining to capture menstrual flow. The period bikini bottom includes a discreet absorbent system so you can enjoy the water without worrying during your period.

Never heard of period swimwear before? Discover the Louloucup period swimwear range as well as the Louloucup teen period swimwear range! A lovely collection of period swim lingerie that’s absorbent on the inside and leakproof on the outside. These products let you swim on your period without fearing leaks—and without having to wear a tampon!

Technical fabrics: absorption and leakproofing

Period swim bottoms are made with innovative materials that absorb menstrual flow while remaining leakproof in the water. They generally feature several layered fabrics: 

  • a decorative outer fabric, 
  • a middle absorbent layer 
  • and an inner leakproof layer.

This technology keeps you protected in all circumstances, even during long swims.


Menstrual bikinis combine technology and comfort with multiple functional layers. The first soft layer touches your skin and captures the flow, a middle layer absorbs and retains fluids, while a waterproof outer layer prevents leaks. This clever system lets you swim freely with no compromise on security.

Two Louloucup period swim bottoms for light to medium flow 💦

II. The advantages of menstrual swimwear compared to traditional protection

Want to enjoy water activities without worrying about your period? Period swimwear is even more practical than tampons for swimming. No more hassle with frequent changes or the discomfort of removing a dry tampon after swimming.

Unlike tampons, which are often used for swimming during your period, menstrual swimwear offers an unmatched sense of security and comfort.


By choosing period swimwear, you’re making an ecological and economical choice for the long term. No more disposable products piling up with every cycle.


A reusable period swim bottom helps avoid the build-up of waste from disposable products. This reusable option fits perfectly into a zero-waste lifestyle. Less waste to throw away, fewer expenses every month. The initial investment pays off over the years, costing less than repeated purchases of disposables.

maillot menstruel

III. Period swimwear: what type of flow is it for?

Flow type
Absorption capacity
Usage tips
Light
1 to 2 tablespoons
Perfect for the first days or light leaks. Choose a soft, lightweight organic cotton style.
Medium
3 to 5 tablespoons
Suitable for a regular flow. Many styles are available to handle this type of flow.
Heavy 6 to 10 tablespoons
Wear a menstrual swimsuit bottom and pair it with a menstrual cup to prevent any leaks.
Very heavy
+10 tablespoons
Same advice: you can wear period swim bottoms for style, along with a menstrual cup or pad to handle a very heavy flow.

How do you combine it with other period products?

For a heavy flow, the combo of period swim bottom + menstrual cup gives you ideal double protection. This pairing boosts protection while keeping things comfortable. The cup collects most of the flow while the bikini absorbs any potential leaks.

This way, you can enjoy a full day at the beach or pool, in saltwater or chlorinated water, on your towel or lounge chair, without being caught off guard, thanks to this simple and effective routine.

IV. How to Choose Your Ideal Period Swimwear

👙 Key criteria for making the right choice

Looking for the perfect period bikini? Several factors will help you choose for a worry-free summer. Absorbency, material, cut, and color should all be considered based on your body type and current preferences. Let us guide you!

Breathable, chlorine-resistant materials for maximum comfort in the water.

Absorption capacity suited to your flow (light, medium, or heavy) for optimal protection.

Ergonomic fit that hugs your body without irritating elastics for comfortable wear.

Certified leak-proof system ensures reliable protection against leaks at the pool or beach.

Compatible with other products like menstrual cups to boost effectiveness.

Simple, black, or solid color designs so you can easily pair them with your favorite swimsuit tops.

👙 The different models and styles available

Period swimwear comes in a range of styles to fit every body type. Classic, tanga, boyshort, or high-waisted, each cut offers unique comfort. In summer, go for modern styles that combine safety and elegance.


Create your perfect look by pairing your period swim bottoms with different tops. A triangle or bandeau top goes beautifully with a solid bottom. For a bold style, try contrasting a black bottom with a printed top. And why not mix up the fabrics for a coordinated set?

👙 Find the perfect size for optimal comfort

The ideal size ensures comfort and effectiveness. Measure your hip circumference at its widest point. Compare your measurements to our size guide (available on every product page).

V. The Laura period bikini bottom: period swimwear with zero compromise

The Laura period bikini bottom from Louloucup has it all! Black, high-waisted, stylish, sexy, absorbent, and soft, it’ll be your go-to all summer long: at the pool with friends, at the beach on holiday, or on that canyoning trip—your period won’t stop you from making the most of your summer! 


Louloucup has combined its expertise in reusable period protection with cutting-edge absorbent fabrics that are leakproof and offer absolute comfort. And as always at Louloucup, Laura doesn’t compromise on price or quality. Laura is €28.90 before the custom bundle discount.


This breathable period bikini bottom offers long-lasting comfort at a gentle price, perfect for starting or expanding your collection of sustainable period products. It’s ideal for holding a light to medium menstrual flow. For heavy flow, pair the Laura bikini with the Loulou Turquoise cup for ultra-effective protection.


Its elegant design (that lacing in the back! 🤩), high waist, supportive stretch, and reinforced leak-proof system make it perfect for sports and water activities—just a few reasons to fall in love with this beautiful product!


Available from size XS to XXL, the Louloucup Laura women’s bikini bottom can of course be bought as part of a bundle with other period products from the brand!

"Finally, a unique swimsuit that isn’t too flashy. Just right. I wear it all the time. Great protection for periods, and I add a cup if needed. Fits perfectly, stays put in the water. Highly recommend." — Céline M.

CUSTOM LOULOUCUP SLIDING-SCALE BUNDLE: HOW DOES IT WORK?

Great deals are waiting for anyone who wants to make a smart investment on the Louloucup shop! The custom Louloucup bundle lets you order several styles and enjoy a lower unit price on each one.

To take advantage of it, nothing could be easier: 

  • Have a look around the shop and pick out your favorite items.
  • Pick your must-have products. Mix styles, sizes, absorbency levels, and collections. There are no limits.
  • Check your cart and you’ll see that the unit price of each product you added has dropped: it goes from €28.90 to €22.90 if you have 5 period products in your cart (panties, cups, bikinis). You save over €30 on your final bill!

Don’t forget to check out current offers, sales, and promo codes (there are often some around!). These can be combined with the sliding-scale bundle offer.

Finally, at Louloucup you only pay for your period products—never for shipping! And yes, that makes a big difference for many people: shipping is always free at Louloucup in France and across Europe. So go for it! Get kitted out with no pressure for a leak-free, stress-free summer!

A few ideas to top up your sliding-scale custom bundle 😎

VI. Our bonus tips: usage, care, and what to do in case of leaks?

🤔 How do you use period swim bottoms properly?

Slip on your period swim bottom just like a regular bikini, making sure the absorbent area is properly positioned. Adjust the sides if needed, depending on the style, for optimal comfort without feeling too tight.

Enjoy the water with total confidence, no complicated handling required.

  • Not at home? Once you’re done swimming and if you want to switch into a dry period panty, bring a waterproof bag to discreetly store your used bikini bottom. 
  • At home? Once you’re done swimming, you can quickly rinse your period bikini bottom in clear water to remove the absorbed menstrual flow. You can then wash it with your next load of laundry. 
  • Our tip that makes all the difference: bring a spare menstrual underwear for times out of the water so you’re always dry. And there you go, you’re ready for a hassle-free day at the beach or pool.

🧼 Care tips to extend its lifespan

  1. After every swim, immediately rinse your absorbent period swim bottom in clear, cool water. This prevents menstrual flow from drying too much in the membrane and clogging it, and also stops salt or chlorine from damaging the elastic fibers of your period bikini. This rinse is recommended for regular swimsuits too.

  2. Machine-wash your period swim bottom on a cold cycle with a gentle detergent, without fabric softener. Let it air dry to preserve the technical materials. Avoid direct sunlight, heat sources, or tumble drying.

  3.  This super-comprehensive guide to caring for period swimwear explains how to protect the technical fibers in your period bikinis and, above all, extend their lifespan!

TIPS

If you’re unsure about anything, feel free to head over to the Care Tips tab of the blog. There you’ll find all our articles on how to properly wash, deep-clean, and care for all your washable, reusable period products like period panties, menstrual cups, or period swimwear! With all our tips and tricks, you’ll be able to tackle set-in stainsand unpleasant odors and keep your washable period products for years!

🩸 What to do if you experience leaks or discomfort

  • If you have a leak, stay calm and discreetly remove your bikini in a changing cubicle or under your towel. 
  • Quickly rinse yourself off with fresh water if possible. 
  • Then slip on your backup period panty. That’s why we insist on ordering your period panties at the same time as your period bikini bottom. The two types of protection really complement each other! The ideal backup period panty? You’ll easily find your favorite on our shop. We’re big fans of the Fanny heavy-flow period panty. It’s black, discreet, and keeps you protected for many hours! 😉

If you notice repeated leaks, check your size and the absorbency level. A style that’s too tight can cause discomfort. Try different fits or pair it with a cup, for example, to find your ideal combo.

😎 Want to enjoy summer without compromise? The period swim bottom combines comfort, style, and reliable protection for carefree swims. No more worrying—choose a reusable solution that’s kind to your body and the planet!


Ready to make your beach or pool days even better with Louloucup?

règles
maillot
laura

FAQ: menstrual swimwear

What is a menstrual swimwear bottom?

A period swim bottom is a bikini bottom specially designed to be worn during your period and in the water. It has a discreet absorbent system so you can enjoy the water without worry.


Unlike regular swimsuits, it offers reliable, comfortable protection so you can enjoy your swim with total peace of mind.

Don’t confuse period swim bottoms with regular period panties, which are not suitable for swimming!

How does the absorbent technology in period swim bottoms work?

These period bikinis combine technology and comfort with a multi-layer functional system. A soft top layer captures your flow, a middle layer absorbs and holds liquid, and a waterproof outer layer prevents leaks.

This clever system lets you swim freely without compromising your safety or comfort.

What are the advantages of period swim bottoms compared to traditional protection?

Menstrual swimwear is more practical and comfortable than tampons for swimming. It eliminates the hassle of frequent changes and the discomfort of a dry tampon after swimming.


By choosing menstrual swimwear, you’re making an eco-friendly and budget-conscious choice. Reusable, it helps you avoid waste and cut down on monthly expenses.

What types of flow is menstrual swimwear suitable for?

Period swimwear comes in different absorbency levels. They’re suitable for light to medium flows.


For a very heavy flow, it’s recommended to pair it with a menstrual cup for maximum protection.

How do you combine menstrual swimwear with other period products?

For a heavy flow, the combination of period swimwear and a menstrual cup offers enhanced protection. The menstrual cup collects the main flow, while the swimwear absorbs any leaks.


Bring backup period underwear for when you’re out of the water so you can stay dry. Take a waterproof bag to discreetly store used products and make the most of your day.

How to choose the right menstrual swimwear?

Several factors influence your choice: absorbency, material, cut, and color. Choose breathable, chlorine-resistant fabrics for maximum comfort.

Make sure you find the perfect fit by measuring your hip circumference and checking the brand’s size guide.

How do you care for your period swimwear?

After each swim, immediately rinse your underwear in clear water. Machine wash cold with a gentle detergent, and don’t use fabric softener.

Air dry it to preserve the technical materials. Rinse after use to maintain elasticity.

To learn more...

Louloucup

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! 🩷

A period swim bottom so you can make the most of the pool this summer?