Born on the French Riviera

Leak-proof lingerie you actually want to wear

Luxury intimate apparel, swimwear, and activewear designed for every stage of womanhood. PFAS-free. No compromises.

PFAS-Free Luxury Fabrics All Life Stages

The industry told women to choose: protection or beauty. We refused.

When the biggest period underwear brand was caught using toxic forever chemicals, it confirmed what we already knew. Women deserve better than functional basics with harmful shortcuts. Petronila exists because leak-proof should also mean luxurious, safe, and beautiful.

Designed for Every Stage

Menstruation

Cycle Care

Heavy flows, light days, unpredictable moments. Our multi-layer absorption technology handles it all while you wear something that actually feels like lingerie, not medical equipment.

Postpartum

New Beginnings

Your body just did something extraordinary. Our postpartum collection provides gentle, full-coverage support with the softness and protection new mothers deserve during recovery.

Menopause

Graceful Transition

The market ignores women over 45. We don't. Discreet protection for bladder sensitivity, night sweats, and unpredictable changes, in silhouettes that honor this chapter, not hide from it.

The Collection

Lingerie

Bralettes, briefs, thongs, and high-waisted silhouettes. Each piece engineered for invisible protection with visible elegance.

Swimwear

Bikinis and one-pieces that keep you confident from pool to ocean. Leak-proof without the bulk, designed for the Riviera and beyond.

Activewear

Leggings, shorts, and sports bras built for movement. From yoga to HIIT, protection that performs as hard as you do.

What we put next to your skin matters

0 PFAS Forever Chemicals
100% Tested & Certified Safe
12hr Leak-Proof Protection
Our Story

Conceived on the Riviera. Made for every woman.

Born in Nice, France, Petronila draws from a world where swimwear is culture, where intimate apparel is art, and where women refuse to compromise between beauty and function. We bring that ethos to every piece we create, for every woman, at every stage.

Luxury that protects you

Petronila. Every body. Every stage. No compromises.