Period underwear shouldn’t feel bulky, synthetic or like a nappy reboot. Ours don’t. Scarlet pairs are PFAS-free, breathable, soft where you need softness and secure where you need strength. They’re designed for real outfits, real bodies and real days, from the office to the gym to the nights where you sleep like a starfish. Here’s what makes them different.

Design That Actually Fits Your Life

Most period underwear tries to hide behind marketing. We prefer transparency.

PFAS-free materials - Your most sensitive skin deserves better than “mystery fabric.” All our pairs use safe, breathable cotton with high-performance layers that don’t feel sweaty or plastic.

No bulk, no sag, no ‘adult diaper’ silhouette - We cut each style like actual underwear - think flattering, flexible and made to move.

Full coverage where it counts - Leak resistance that works without feeling like armour. Every pair is built with design first, not damage control.

Choose Your Cut by Flow and Outfit

This is period care you dress for, not plan around.

• Bikini - Everyday comfort. Works under denim, dresses and almost everything else.
• High-Waist - Secure, smoothing and supportive. Ideal for medium flow or days you want extra confidence.
• Boyshort - Your overnight hero. Full coverage, front to back, so you can move, curl, and sprawl, all while remaining leak-free.
• Thong - Zero VPL, perfect under activewear and fitted looks. Light-flow or backup days only.