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Scarlet Period G-String | Leakproof, Light Absorbency, PFAS-free, Organic Cotton
Scarlet Light Flow Period G-String – Leak-Free, Comfortable Protection
Scarlet Light Flow Period G-String – Leak-Free, Comfortable Protection
Scarlet Light Flow Period G-String – Leak-Free, Comfortable Protection
Scarlet Period G-String provides light, leak-free protection for drips, discharge, and lighter flows.
Scarlet Period G-String provides light, leak-free protection for drips, discharge, and lighter flows.
Scarlet Period G-String | Leakproof, Light Absorbency, PFAS-free, Organic Cotton
Scarlet Period G-String | Leakproof, Light Absorbency, PFAS-free, Organic Cotton
Scarlet Light Flow Period G-String – Leak-Free, Comfortable Protection
Scarlet Light Flow Period G-String – Leak-Free, Comfortable Protection
Scarlet Light Flow Period G-String – Leak-Free, Comfortable Protection
Scarlet Period G-String provides light, leak-free protection for drips, discharge, and lighter flows.
Scarlet Period G-String provides light, leak-free protection for drips, discharge, and lighter flows.
Scarlet Period G-String | Leakproof, Light Absorbency, PFAS-free, Organic Cotton

Period G-String

Tight pants approved. Periods included.

$24.00

Light days, zero drama. The G-String catches drips and discharge without you thinking about it, around two tampons' worth, with no visible lines.

Soft organic cotton, PFAS-free and lab tested. Proof that light-flow protection doesn't mean giving up the undies you actually want to wear.

    Organic Cotton Softness
    PFAS-Free & Toxin-Free
    Comfortable Stretch Fit
    Ultra-light, barely-there comfort
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Australian designed · PFAS-free · 30-Day Risk-Free Trial

✨ Barely-There Comfort: Lightweight, second-skin feel.

✨ Discreet Protection: Ultra-thin gusset for light flow and backup.

✨Breathable Organic Cotton: Soft and sustainable.

✨Chemical-Free & Eco-Friendly: Free from PFAS and nasty chemicals.

✨ Rinse in cold water until clear.

✨ Machine wash cold with mild detergent.

✨ Skip bleach and fabric softener - your bikini brief doesn’t need them.

✨ Line dry or tumble dry on low. Simple, right?

✨ 95% GOTS Certified Organic Cotton for a soft, breathable feel.

✨ 5% Spandex for the perfect amount of stretch.

✨ Quick-dry gusset made from Polyester/PUL for leak-free protection.

✨ No toxic chemicals like PFAS. Independently lab-tested.

✨ 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!

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.

Size Chart

Size chart for Period G-String
Scarlet Period G-String | Leakproof, Light Absorbency, PFAS-free, Organic Cotton

Period G-String

$24.00
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Scarlet Period G-String on two models

Like wearing nothing at all

We took the classic G-String and made it super comfy, and period-proof.

Leak-free protection for drips, discharge and lighter flows, around two tampons' worth, with zero visible lines. Because tight pants look great on you.

  • No visible lines
  • Super soft 95% GOTS organic cotton
  • PFAS-free and lab tested
  • Holds around 2 tampons' worth
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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 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.

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.

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.

Why buy a bundle?

Save money and stay prepared! With your period lasting between 3-8 days, a multipack ensures you have enough pairs to manage your cycle comfortably. Check out some of our best-selling sets.
★★★★★

"If you prefer a G-string but still want protection against leakages and spills, this pair is a great option."

NEWS

★★★★★

"Sexy but still supportive. Great period underwear for light flow days that won't hinder your outfit."

Body & Soul

★★★★★

"Among their best picks? Their Period G-String is great for a no-show option that sits well under any clothing."

Harper's Bazaar

Real advice for real cycle days