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Period swimwear: a solution for swimming with peace of mind

Written by: Camille Raynaud

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Published on

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Time to read 6 min

Swimming and your period—a real headache? Enjoying a swim during your period is no longer just a dream!


Period swimwear, menstrual swim bottoms, or menstrual swimsuits—call them what you like, we’ve got the solution for a worry-free summer! No more hiding behind sarongs or shorts at the beach! No more shame, discomfort, stress, or feeling self-conscious.


Period swimwear is an innovative, comfortable, secure, eco-friendly, practical, stylish, and economical solution. Perfect for the beach, pool, or water activities, in salt or chlorinated water—it’s your go-to ally when the weather’s nice.

Discover how this innovative menstrual product captures and holds your flow, just like its counterpart, the period underwear. Also, find out how to choose the right one and use it properly.

At Louloucup, we offer two lines of period bikinis: one for women and one for teens. Flow, body type, age—anyone can use this reliable, practical alternative to disposable tampons!

💧 Period swimwear: how it works, benefits, how to use it

What exactly is period swimwear?

A menstrual swimsuit or period bikini is swimwear designed to be worn during your period. It looks like a regular swimsuit but has discreet absorbent layers to capture and absorb menstrual flow.


The Louloucup menstrual swimsuits use technical materials with three distinct layers to provide optimal leak protection:

  • a draining layer in contact with your intimate area,
  • an absorbent layer at the core of the swimsuit,
  • and a waterproof barrier on the outside of the underwear.
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How does period swimwear work?

The system works through layered technology that functions while submerged. The design prevents leaks thanks to a waterproof barrier while still absorbing blood. This type of swimsuit can capture and hold blood without it diluting into the water once you’re in! Truly impressive!


The swimsuit stays effective while submerged thanks to its waterproof outer layer. Out of the water, the lining reactivates its absorbent function to manage leaks.

The benefits of menstrual swimwear compared to traditional period products

Waste reduction: period swimwear is an eco-friendly alternative to disposable products, and period swimsuits reduce plastic waste from tampons and pads. It’s a real eco-conscious choice to help protect the environment.

Long-term savings: Absorbent swimwear is a cost-effective solution with a one-time investment, saving you from having to buy disposable period products over and over. It lasts a long time, making it a smart long-term investment.

Comfort and freedom: period swimwear lets you swim worry-free during your period. No more irritating, uncomfortable tampons!

Maximum discretion: Designed to look like a regular swimsuit, ensuring invisible protection at the pool or beach.

Leak-proof technology: Triple layer (absorbent, draining, and waterproof) to prevent leaks and manage changes in menstrual flow.

Users praise the reliability of these long-lasting designs. Many highlight the comfort and security they feel while swimming, along with optimal discretion.

Compatible with different water activities

Period swimwear adapts to all aquatic environments. Whether in a pool, the sea, or a lake, the protection remains effective for light to moderate flow. Some use it for surfing lessons or canoeing and canyoning trips.


For water sports, choose a model suited to your activity. A good fit and the right size ensure comfort and safety.

💧 Louloucup menstrual swimwear styles




One-piece swimsuit: elegance and maximum protection

Meet Noa, Louloucup’s one-piece period swimsuit. Its triple-layer technology provides reliable protection and absolute comfort while swimming.


The Noa menstrual swimsuit is designed to meet users’ needs with its flattering fit and timeless black color. It absorbs the equivalent of 2 regular tampons.

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Period bikini bottoms: flexibility and discretion

The menstrual swim bottom is suitable for light to medium flow. Mix and match with your favorite tops (like a swim bra) for a personalized look without compromising on security.


Louloucup offers several styles of swim bottoms in a range of sizes, from XS to XXL. Whether you prefer classic, timeless, or more original lace-up styles, you can choose from several options.

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The teen collection: comfort and confidence

The Louloucup menstrual swimwear line for teens lets girls enjoy summer with more peace of mind while dealing with their first periods.


Young girls will find what they need in a collection designed for their body types, with cuts and sizes made just for them. The black color is reassuring with its discreet, timeless elegance.

Spotlight on… the Juliette Menstrual Swim Bottom


  • From XS to 2XL.
  • Inspired by the Naomi medium-flow period underwear. 🤩
  • Beautiful, sexy, and elegant lacing on the hips.
  • Solid black color.
  • As pleasant to wear as it is reliable.
  • Fun, mix-and-match look.
  • The protection is ultra discreet and undetectable.
  • Absorbent zone holds menstrual flow without swelling.
  • Suitable for light to medium flow.
  • An excellent zero-waste alternative to tampons for swimming.
  • Washable and reusable.


💧 How to choose the perfect period swimwear

Find the right size for optimal protection

To choose the right size for your period swimsuit, follow the brand’s sizing guide. Accurate measurements ensure a perfect fit, which is key to preventing leaks and enjoying the water with confidence.


A good fit is important for the product’s effectiveness. Well-placed elastics and the right lining keep the swimsuit from shifting in the water, ensuring constant protection while you swim.

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Combine cup and period underwear for heavy flow

Assess your flow and adjust your protection accordingly. At the beginning or end of your period, a period swimsuit is enough. But if you have heavy flow, one period bikini probably won’t be sufficient.


Add a menstrual cup to your period routine to prevent leaks and avoid any mishaps. The menstrual cup really is the most effective and eco-friendly way to manage heavy or very heavy periods. It’s also the perfect solution for swimming. There’s a reason swimmers love it so much.

💧 Care and durability of menstrual swimwear

How to wash your period swimsuit: the steps

  • Rinse your protection in clean water after each swim to maintain its absorbency. Gently squeeze to preserve the technical properties of the special period fabric.

  • Just like with regular period underwear, wash your menstrual swimsuit at a maximum of 86°F (30°C) in a laundry bag. Don’t use fabric softener or harsh products that could reduce its effectiveness.
  • Air dry, do not use a dryer. This care preserves the leak-proof barrier and extends the life of the garment.


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Durability of period swimwear: a smart investment

A well-maintained model (washed, dried, and stored properly) will last for several seasons. It’s resistant to chlorinated water, making it a cost-effective purchase in the long run. Compared to disposable products, the initial price is justified by its reusability.

Period swimwear and environmental responsibility

By replacing disposable products, the period swimsuit helps reduce waste. Every cycle without tampons supports this eco-friendly approach. Durable fabrics and eco-designed processes lower the environmental impact. The period swimwear is part of responsible period management. Regular reuse further boosts its positive effect on the environment.

💧 To sum up: period swimwear, your best summer friend

Louloucup period swimwear offers an innovative solution for leak-free, stress-free swimming, thanks to its absorbent technology and comfortable fit.

By choosing a period swimsuit instead of tampons, you’re using a protection that’s ideal for you, your health, and the planet. 

Discover these stylish, confidence-boosting allies, perfect for carefree swimming—your summer is waiting!

FAQ: period swimwear

Menstrual swimwear: is it effective for all flow levels?

Period swimwear is effective for light to medium flows—perfect for the beginning or end of your period, during pregnancy for light discharge, or for irregular cycles. For heavy flows, it's recommended to use them along with a menstrual cup or tampon.


Their effectiveness relies on technical fabrics: an absorbent layer for comfort, a membrane to hold the flow, and a waterproof fabric to prevent leaks. They offer a discreet and comfortable alternative to traditional protection.

Can you wear period swimwear outside of swimming?

Yes, you can absolutely wear period swimwear out of the water. They’re designed to be comfortable, effective, and stylish—great for the beach, pool, or even under regular clothing. They can be worn anytime, during your period or not, and are suitable for all flow levels.


These swimsuits feature invisible layers that absorb, hold, and prevent leaks. While similar to period underwear, menstrual swimsuits are specially designed to withstand swimming thanks to their waterproof layer.

Period swimwear: what are the three advantages of Louloucup?

Louloucup offers menstrual swimwear with a size guide based on hip measurement, ranging from 84-86 cm (XS/size 2) to 109-113 cm (2XL/size 14).


All Louloucup swimsuits (bottoms and one-pieces) are available in multiple sizes (from XXS to 2XL). In classic black, they pair perfectly with colorful bikini tops and sarongs.

Learn more

Looking for a period swimsuit that’s both high-performing and stylish?