Finally swim with total confidence
Wore these for my whole holiday and never once worried about leaks. Completely invisible under my swimsuit and so comfortable.
Leak-proof and odour-free
Up to 12h of protection
Machine washable
30° without fabric softener
Reusable
For 5 to 7 years
Ultra-discreet protection
No bulky feel
The Sybille period swimsuit lets you swim with total peace of mind during your period, with no tampon or cup. Its patented 4-layer technology absorbs the equivalent of 3 tampons while staying 100% invisible — indistinguishable from a regular swimsuit.
Designed with textile engineers and gynaecologists, tested in chlorinated pools and seawater.
Delivery: Ships within 5 to 7 business days to the UK. Free shipping on orders over £60.
Returns: 30-day satisfied-or-refunded guarantee — even worn, even washed. If the size does not fit, free exchange. Contact us via the form on our website.
No fabric softener, no tumble dryer, no bleach — to preserve the absorbent technology.
Outer: 86% recycled nylon, 14% elastane — soft, chlorine-resistant, eco-friendly.
Built-in 4-layer technology:
On average, a person uses 17,000 disposable products over their menstrual life — that much plastic waste ending up in the oceans.
A single Sybille swimsuit, used for 5 years, replaces around 1,000 tampons. Washable, reusable, no single-use plastic. It's good for you and for the planet.
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Pour Ados et Adultes.
Wore these for my whole holiday and never once worried about leaks. Completely invisible under my swimsuit and so comfortable.
Absorbent, discreet and no bulky feeling whatsoever. I can finally swim on my period without a single worry.
The fabric feels lovely and holds up beautifully wash after wash. Genuinely the best menstrual swimwear I've tried.
I used to dread swimming on my period. These changed everything — secure, soft and you truly cannot tell.
Stayed perfectly in place while swimming and snorkelling. Zero leaks and they dried quickly too. Highly recommend.
You honestly cannot tell these are period swimwear. Flattering fit and brilliant protection — worth every penny.
Bought a pair for my daughter and she finally feels confident swimming at school. Thank you Henriette!
Light, secure and absolutely invisible under my bikini. I've already ordered a second pair.
Ils parlent du maillot de bain menstruel
Développée avec des ingénieurs textiles et des gynécologues : aussi fine qu'un maillot classique et avec la meilleure absorption du marché.
Quel maillot menstruel est fait pour toi ?
Réponds à 2 questions et découvre le modèle qui correspond à ta morphologie et ton flux.
Quelle protection utilises-tu d'habitude un jour de règles classique ?
Les jours où ton flux est au plus fort, tu changes ta protection…
Tout savoir avant d'acheter
I was so nervous about wearing a swimsuit during my period on holiday, but these bottoms were a total game-changer. No leaks at all and the fit is lovely. Wish I'd found them sooner!
Comfortable, flattering and genuinely leak-proof. I've worn them swimming twice now and felt completely secure. The colour is gorgeous too.
Bought these for my teenage daughter and she's so much more confident at her swimming lessons now. Lovely quality and they wash brilliantly.
Was sceptical at first but these are excellent. Discreet, comfy and no faffing with tampons at the beach. Highly recommend.
The fabric is so soft and the high waist is really flattering. I felt secure all day at the lido.
True to size and the protection is spot on. Took them on a girls' trip to Spain and didn't worry once.
I have heavy periods and was worried, but no leaks whatsoever. The customer service was lovely too.
Beautiful swimwear that actually works. Already ordering the matching top!
Delivery was quick and the quality is far better than I expected. These are now my go-to for the pool.
Exclusive offer
Add our waterproof pouch to your order — perfect for carrying your wet swimsuit home after the beach.

Waterproof Sleeves
£6.90