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Your teen should never have to miss out on a swim with friends, skip a swimming lesson or give up an activity during the holidays because of her period. First periods are often unpredictable, both in terms of flow and duration, and can quickly become a source of stress.
So that young girls no longer hesitate at the poolside, we created a period swimwear collection specially designed for teens.
At Sorio, we support teenage girls so they can experience their menstrual cycle with complete freedom, calmly, and without ever letting their period hold them back.
Teen girls have very specific needs: their bodies are changing, their menstrual cycle is settling in, and it is essential to offer them a solution that is truly suited to this time of transition.
Puberty is a time when the body shape changes quickly: in-between sizes, hips beginning to take shape, breasts developing… Teen girls gradually move on from children’s sections, but still do not fully match adult cuts.
It is precisely to meet the needs of this changing body shape that we designed a period swimwear collection specially created for teens, with swimsuits that fit perfectly, without squeezing or slipping. Every cut has been designed to offer comfort, support and confidence.
To help you choose the ideal style for your teen, we created detailed size guides for each swimsuit, tailored to teenage girls’ specific measurements.

During the first few years, periods can be very irregular, both in length and intensity. It can therefore be difficult to determine your teen’s actual menstrual flow and choose the most suitable period swimsuit.
To ensure effective protection during swimming lessons, outings with friends or beach days, we recommend basing your choice on her heaviest flow.
Don’t worry, we created a guide to help you easily calculate your teen’s menstrual flow. Once you know her flow, all you need to do is choose a suitable swimsuit.
On each product page, you will find clear information distinguishing moderate flow from heavy flow.
Our swimsuits provide them with reliable leak-proof protection, even while moving. They will never again have to worry about a tampon string showing or the risks associated with toxic shock. They can swim, play, sunbathe and enjoy themselves fully, with complete peace of mind.
Because every teen is unique, Sorio offers a complete range of period swimwear designed to suit all their preferences and all their activities.
For sunbathing freely: the period bikini
Discover our Eva, Ava and Nina styles. Discreet and versatile, they make it easy to create beautiful mix & match looks so you can stay stylish, even on your period.
For swimming or sports activities: the one-piece swimsuit
Our Lola style, featuring a racerback, is specially designed for swimming. Perfect for PE lessons or for pool lovers.
For those who want more coverage:
Three styles offer more coverage while staying elegant :
The Stella one-piece swimsuit: comfort, support and style, with its thin crossed straps.
The Naya high-waisted swimsuit: a covering cut and optimal protection.
The Aria swim skirt: the combination of a period swimsuit and a little skirt, blending style and discretion.
Each style features Sorio’s leak-proof technology, which is absorbent, breathable and ultra-thin, and cannot be distinguished from a traditional swimsuit.
Beyond offering period swimwear suited to teenage girls, we are committed to supporting them through a broader approach focused on information, prevention and well-being.
We already provide educational resources, such as:
An e-book to better understand the menstrual cycle.
A fun booklet to help her get familiar with her first periods.
A blog full of articles and advice to help her experience the arrival of her first periods with peace of mind.
We also take action on the ground by supporting Coral Guardian and Wings for the ocean, associations whose mission is to protect the oceans, so your teen can enjoy their beauty for life.
At Sorio, we want to help every teen grow up with freedom, confidence and comfort, during her period… and every day.
The honeycomb layer
Keeps you feeling dry. This honeycomb layer lets blood pass through to the layers below. It is also hypoallergenic and antibacterial.
The absorbent fabric
A technical absorbent layer that captures and channels blood. Offers high absorption capacity.
Keeps water and blood from mixing. This protection is leakproof.
Blood stays trapped in the swimwear and water can't get in.
How do I choose period swim bottoms for my teen?
It's pretty simple. You need to know her swimwear size (a size guide is available below the size selector) and her menstrual flow.
Measuring your teen's menstrual flow can be tricky, which is why we created a guide to help you choose the ideal swimwear.
At what age can my teen start wearing period swimwear?
There's no minimum age for wearing period swimwear.
From her very first period, your teen can use suitable swimwear. You just need to choose the right size and absorption level for her needs.
Can my teen swim in period swimwear without risk of leaks?
Fear of leaks is common, but period swimwear carries less risk of leaks than tampons.
Its absorption technology captures only blood, not water, with no discomfort and no ballooning. The swimwear follows the body's movements perfectly, which prevents leaks.
Your teen can swim with peace of mind during her period with Sorio period swimwear.
Is there a difference in absorption between heavy flow and regular period swimwear?
Yes, there's a difference in absorption between swimwear for medium flow (regular) and swimwear for heavy flow.
Regular period swimwear absorbs the equivalent of 3 tampons, while heavy flow period swimwear offers extra absorption capacity.
Either way, your teen gets 8 hours of peace of mind, as long as she chooses the style that matches her flow. On the heaviest days, regular swimwear will reach its limit sooner and should be changed about every 4 hours.
Not sure how to gauge her flow? Our guide will help you figure it out.
Can my teen wear a one-piece period swimsuit in competitions?
Yes, as long as the cut of the swimsuit is suited to competitive swimming, like the Lola style.
All your teen has to do is go for gold!
How long does teen period swimwear last?
Teen period swimwear has a lifespan of at least 5 years.
With proper care, it can last even longer.
In particular, we recommend placing it in a laundry bag when washing, avoiding the dryer, and following the care instructions to extend its life by a few years.
Why choose Sorio for my daughter's period swimwear?
Since the very beginning, Sorio has designed period swimwear made for teens. Our range has been developed over several years with one clear goal: freeing teens from the constraints of their period.
Our experience in period swimwear and the thousands of happy young customers make us the No. 1 brand of period swimwear for teens.
We keep improving our products every day to give them comfort, security, and freedom.
Where can I find Sorio period swimwear for teens?
Sorio period swimwear for teens is available in several places.
You can buy it on our website, on Amazon, or in store at Decathlon starting April 2026 and at our partner pharmacies.
Good to know: the full teen range is only available on our website. That's where you'll find the most styles, sizes, and options for her flow.
Give your daughter a healthy, comfortable solution for her first period. Period swimwear is revolutionizing swimming and helps teens feel more at ease during their period.