Home/Scarlet | Period Underwear/High-Waist Period Brief

Scarlet Moderate Flow Period High-Waist Brief – Full Coverage, Comfortable

Scarlet Period High-Waisted Brief | Leakproof, PFAS-free, Moderate Absorbency

High-Waist Period Brief

Q: What does the absorbency level mean?

Super Light: Holds up to 1 teaspoon, equal to less than one regular tampon. Think of it as a new-age panty liner, great for spotting, light leaks and discharge. Try: Invisible ThongLight: Holds up to 3 teaspoons, equal to 2 regular tampons or one pad. For light days, drips and discharge. Try: G-String or Bikini Brief in Light-ModerateModerate: Holds up to 5 teaspoons, equal to 3 regular tampons or 2 pads. For moderate days, or as extra defence on heavy days with our Period Cup. Try: High-Waist Brief or Bikini Brief in Moderate-HeavyHeavy: Holds up to 7 teaspoons, equal to 4 regular tampons or 3 pads. Our heavy hitters are great worn on their own, day or night. Try: Boyshort or Period Cup

Moderate flow. Secure, no shifting.

$25.00

Day one to day dot, sorted. Full coverage in a soft modal blend that sits smooth under everything, for moderate days, around three tampons' worth.

45% modal, 45% cotton, 10% spandex, for stretch that stays put. PFAS-free and lab tested. High enough to be genuinely comfortable, which on day two is the whole point.

PFAS-Free & Toxin-Free

Comfortable Stretch Fit

Comfy & Body-safe

Full Coverage & Comfort

Size

6 (XS) 8 (S) 10 (M) 12 (L) 14 (XL) 16 (XXL) 18 (XXXL)

Why You'll Love it

✨ Full Coverage Protection: Comfort and confidence with full coverage.

✨ Absorbency for Medium to Heavy Flow: Made with multi-layered leak-proof technology, they absorb up to 5 teaspoons of fluid (about 3 regular tampons or 2 regular pads).

✨ Soft & Breathable Fabric: Have a soft, stretchy feel.

✨Leak-Proof Gusset: Quick-drying polyester gusset provides reliable leak-proof protection, ensuring you stay dry and comfortable.

✨ High-Waist Design for Extra Support: The high-waisted cut offers extra coverage and support, providing a smooth, flattering fit.

✨ Sustainable & Eco-Friendly: Made with eco-conscious materials, free from harmful chemicals, for a more sustainable period solution.

Easy Care, Zero Fuss

✨ Rinse in Cold Water: After wearing, rinse in cold water until it runs clear to keep them fresh.

✨ Machine Wash Cold: Toss them in with mild detergent (no bleach or fabric softener, please).

✨ Dry with Ease: Line dry or tumble on low - no need for extra care.

✨ Need more info? Please read our complete guide to caring for your period underwear here.

Materials & Composition

✨ 45% Modal, 45% Cotton, 10% Spandex for perfect stretch

✨ Absorbent gusset made from quick-drying Polyester/PUL

✨ Free from toxic chemicals like PFAS

✨ Independently lab-tested for safety and peace of mind

Size & Fit

✨ Fit Note: Our underwear runs on the slightly smaller side - if you're between sizes, size up.

✨ Teen-to-Adult Fit: Our sizing is unique - please refer to both the numerical (e.g. 10, 12) and letter sizing (e.g. M, L) in our guide.

✨ Australian Sizing: We use AU sizes - international customers, check our Size Guide.

✨ Still Unsure? Contact us for advice. We love a chat!

Planet-Friendly Practices

Did you know that over 12 billion pads and 7 billion tampons end up in landfills yearly? By choosing Scarlet, you're supporting a more sustainable future - where self-care and sustainability go hand in hand.

✨ High-Quality, Safe Fabrics: Made with care, free from PFAS and harmful chemicals, and independently lab-tested for your safety.

✨ Eco-Conscious Manufacturing: Crafted with a focus on quality and reducing environmental impact.

✨ Recyclable Packaging: Minimal waste for a cleaner world.

✨ 1% for the Planet: Scarlet is proud to contribute to environmental stewardship with every purchase.

High-Waist Period Brief

$25.00

Models wearing Scarlet Period High Waisted Brief

Voted the most comfortable period undies you'll ever own (by us)

The comfiest undies to wear beneath high-waisted pants, jeans and skirts. (We checked.)

Full coverage for moderate days, around three tampons' worth, in a soft modal blend that sits smooth and doesn't dig in.

Feels and looks like normal underwear
High-waisted, great for bloating
Soft modal-cotton blend
Holds around 3 tampons' worth

BUY NOW

Your Questions, Answered

How do they work?

Scarlet Period Underwear is designed to fit like normal underwear and features multi-layered leak-proof technology that wicks away moisture, absorbs fluid, and contains it 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.

Do I need to wear a cup, tampon, or pad too?

Depending on the absorbency you choose and the heaviness of your flow, you can wear our period undies on their own or as backup along with a Period Cup or tampon.

What is your 30-day risk-free trial?

We offer a 30-Day Risk-Free Trial for first-time shoppers for one pair of underwear. If you’re unsatisfied or have sizing concerns, email us at support@scarletperiod.com.

What does the absorbency level mean?

Super Light: Holds up to 1 teaspoon, equal to less than one regular tampon. Think of it as a new-age panty liner, great for spotting, light leaks and discharge. Try: Invisible Thong

Light: Holds up to 3 teaspoons, equal to 2 regular tampons or one pad. For light days, drips and discharge. Try: G-String or Bikini Brief in Light-Moderate

Moderate: Holds up to 5 teaspoons, equal to 3 regular tampons or 2 pads. For moderate days, or as extra defence on heavy days with our Period Cup. Try: High-Waist Brief or Bikini Brief in Moderate-Heavy

Heavy: Holds up to 7 teaspoons, equal to 4 regular tampons or 3 pads. Our heavy hitters are great worn on their own, day or night. Try: Boyshort or Period Cup

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!

TIP: 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.

How do I pick the right size for me?

We get it, sizing for bottoms is anything but standardised. Which is why this size guide will help break it down for you. Make sure to check both our numeric and letter sizing so no confusion (ie. our large is a 12).

When in doubt, feedback tells us better to size up. Still confused? You can also email us for help at support@scarletperiod.com.

★★★★★

"Surprisingly just as discreet as the G-string ... looking like any regular pair of Cotton briefs."
Beauty Heaven

★★★★★

"This Aussie-based label is putting the cool into period knickers."
Refinery29

★★★★★

"The modal cotton fabric is not only comfy, it’s better for the environment as the creation process doesn’t use as much water."
NEWS