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Period underwear that looks as good as it feels!
Scarlet Period Underwear Bikini Brief
With breathable, soft organic cotton, our Bikini Brief is stylish and leaf-proof.
Scarlet Period Bikini Brief side view
The Scarlet Period Bikini Brief (moderate) is the perfect everyday period underwear in a classic mid-rise silhouette that delivers moderate period protection.
Scarlet Period Bikini Brief Size Chart
Scarlet Period Underwear Absorbency Guide

Scarlet Period Bikini Brief

Available in Light and Moderate

Period underwear that looks as good as it feels! With breathable, soft organic cotton, our Bikini Brief is stylish and leak-proof.

Special Features

  • Fast-absorbing
    Fast-absorbing
  • Machine Washable
    Machine Washable
  • Leak-proof
    Leak-proof
  • 1% for the planet
    1% for the planet
DETAILS

Designed for ultimate comfort, protection and performance, the Scarlet Period Bikini Brief is the perfect everyday period underwear in a classic mid-rise silhouette. 

With fast-absorbing 4-layer technology that wicks away moisture, and absorbs and contains fluid to keep you dry during your period, you can bleed, wash and wear on repeat.

The Moderate Days Bundle
Available in Light and Moderate
NEED TO KNOW

Machine washable and reusable, they’re an eco-friendly and cost-effective alternative to disposable pads and tampons. After use, rinse in cold water until it runs clear. Machine wash cold with mild detergent, do not use bleach or fabric softener. Line dry or tumble dry on low.


You can pick your Absorbency Level:

Light - can absorb 3 teaspoons of fluid (which is roughly equal to 2 regular tampons or 1 regular pad), making them ideal for lighter days, or as back up protection on heavy days.

Moderate - can absorb 5 teaspoons of fluid (which is roughly equal to 3 regular tampons or 2 regular pads), making them ideal for back up protection during your heavier days, or on its own on moderate ones. 

MADE FROM

95% Organic Cotton, 5% Elastane and a Polyester/Elastane/ PUL Quick Dry Gusset. Free from added chemical treatments, including PFAS - understand more (independently lab tested).

GOOD FOR YOU & THE PLANET

Did you know more than 12 *billion* pads and 7 *billion* tampons are thrown out every year. The average person with a period uses 11,000 pads, tampons and panty liners in their lifetime. By switching to Scarlet, you're supporting a period and planet positive future.

Scarlet is a proud member of 1% for the Planet, joining a global community of brands and individuals giving back to the environment.

REVIEWS
Reviews

"Comfy and casual and won’t make you feel like you’re wearing a giant nappy. They’re for a moderate to heavy flow so they should take around three tampons."

Body and Soul

"These seriously feel like real underwear. Super comfy and lightweight - LOVE." 

Hana

"So comfy, wash well, are clean, enviro friendly and solve an issue really well. I always thought the idea of period pants was gross but I'm 110% a fan now. Have tried heaps of brands and these are the best by far. Awesome customer service too."

Kate S

"Sizing is spot on, material is beautiful and they're comfy AF. These look and feel great when you don't."

Maggie C

Your questions, answered

HOW DO THEY WORK?

Scarlet Period Underwear is designed to fit like normal underwear, and feature a multi-layered leak-proof technology that wicks away moisture, absorbs and contains fluid to keep you dry and protected. 

The built in leak-proof technology is harder working than disposable pads which means it can safely hold more liquid, and last for years not hours. Loved by all, you can read some reviews.

WHAT DO THE DIFFERENT ABSORBENCY LEVELS MEAN?

Super Light: Holds up to 1 teaspoon, which is equal less than 1 regular tampons or 1 liner. It’s the perfect everyday underwear for light leaks and discharge, even when you’re not on your period.

Light: Holds up to 3 teaspoons, which is equal to 2 regular tampons or 1 pad, making them perfect for saving you from pesky drips, discharge, and lighter flows.

Moderate: Holds up to 5 teaspoons, which is equal to 3 regular tampons or 2 pads. Wear on moderate dates, or as extra defence on heavy days with our Period Cup. 

Heavy: Holds up to 7 teaspoons, which is equal to 4 regular tampons or 3 pads, making them great to wear on their own, day or night. 

DO I NEED TO WEAR A CUP, TAMPON OR LINER TOO?

Depending on the absorbency level you choose and the heaviness of your flow, you can wear our period panties on their own or as backup protection along with a Period Cup or tampon. Take the time to explore a routine that works for you.

HOW DO I WASH THEM?

After use, rinse them in cold water (we recommend in the shower) until they run clear. Then, machine wash in cold water with mild detergent (no bleach!). Try our Laundry Bag to safeguard them on laundry day. Then just hang out to dry (the sunnier the better) or tumble dry on low - that’s it! 

If it’s your first wear, pop them in the washing machine with your next cold cycle - washing them before wearing activates their absorbency even more.

WHAT IS YOUR 30-DAY RISK-FREE TRIAL? 

This is a new way to period, and we understand fit may take a couple of goes to get into the swing of things. So, we have a 30-day risk-free trial to support you to find the perfect pair. Basically, if it’s your first time shopping with us and you’re not happy with your product, you may be eligible to claim a refund on that product, even if it’s used. Just email us at support@scarletperiod.com.

WHAT IF I NEED TO CHANGE DURING THE DAY?

We recommend travelling with a water-resistant travel bag such as the Scarlet Toiletry Bag, along with a spare pair, so you can always pop them away and rinse when you're home if you need to.

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