Free Shipping over $65 Buy a SET and save Australian Owned
Free Shipping over $65 Buy a SET and save Australian Owned
Free Shipping over $65 Buy a SET and save Australian Owned

$65.00 away from free standard shipping

$65.00 away from free standard shipping

Congrats! You get free standard shipping.

Your cart is empty

Let's change that!

Shop All Products
Discreet protection, this Thong means you can still wear white
Invisible, invincible: embrace discreet protection!
Invisible feels as good as it looks.
Perfect for no lines
Nude for discreet period protection
Great for discharge, sweat and spotting, make pantyliners a thing of the past.
Light Flow, Big Comfort: Scarlet Invisible G-String
Like a panty liner, but make it stylish! Shown in black
Like a panty liner, but make it stylish. Shown in nude
Find your best Invisible Thong size
Check Invisible Thong Absorbency

Scarlet Period Invisible Thong

Super Light

eqv. 2 tampons

This barely-there thong stretches to your every move. Discreet and comfortable, perfect for light flow and spotting days.

  • Fast-absorbing
    Fast-absorbing
  • Leak-proof
    Leak-proof
  • Comfy & Body safe
    Comfy & Body safe
  • Machine washable
    Machine washable
  • Odour-free
    Odour free
  • Stylish & Discreet
    Stylish & Discreet
Upgrade your order
Keep your undies safe with a Scarlet Period Laundry Bag +$10
ADD TO ORDER
Item will be included
Shop now to try risk-free for 30 days

We promise you'll love them or we'll give your money back!

DETAILS

The Scarlet Period Invisible Thong is your go-to period underwear for discreet spotting protection. The buttery soft fabric with 360° stretch will ensure you feel sexy, even on days when you bleed. Available in black or nude.

With its quick drying thin and absorbent gusset, it absorbs 1 teaspoons of fluid (along with sweat and moisture!) like a panty liner, so you can look great and feel confident every day. It’s the perfect everyday underwear for light leaks and discharge, even when you’re not on your period.

The Sultry Days Set
Super Light
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.

MADE FROM

76% Polyamide, 24% Elastane, and a Polyester Quick Dry Gusset. Free from added chemical treatments, including PFAS (independently lab tested).

GOOD FOR YOU & THE PLANET

Harder working than disposable pads and tampons, our Period Underwear lasts for years not hours. 

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
IN THE MEDIA
IN THE PRESS

If you were looking for a sign to break up with panty liners, this is it.

You can still feel sexy on your period. Our discreet Invisible Thong proves it.

Designed in a barely-there style with light absorbency, it's perfect for light flows and spotting days. Made with a buttery soft, 360° stretch fabric, it feels like you're wearing nothing at all.

Like wearing nothing at all
Buttery soft fabric with 360° stretch
Chemical treatment-free, including PFAS
Like a new age panty liner, catches sweat and drips
Absorbs the equivalent of 1 teaspoons of fluid
ORDER NOW

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.

And if you are feeling Cup curious, you can learn more about how Period Cups work via our blog. They’re not as scary as you think!

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.

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. For extra ass-urance, make sure to whip out your trusty measuring tape. (Most likely stashed at the bottom of your junk drawer.) Make sure to check both our numeric or letter sizing so no confusion (ie. Our large is a 12). And when in doubt, feedback tells us better to size up.

Still confused? Click for more information on our Returns Policy and our 30-Day Trial Policy. You can also email us at support@scarletperiod.com.

"I can wear during ovulation when I get those annoying leaks or sneeze too hard! I loaded up on these and got a couple of weeks’ worth, that’s how much I love these!"


Melissa M.

"I love the seam-free for wearing out and about."

Sophie H.

"After trying other scarlet undies I thought I'd give these a go. So happy I did. These too are awesome."

Kate S.

"I love that I can wear these panties for light leaks and discharge, even when I'm not on my period."

Cassie H.

"The most comfortable thong. These are super soft, stretchy and impressively unnoticeable. Have been wearing on first and last days of my period, when it’s lighter, and they were perfect!"

Jasmine G.

"I wear them every day, even when I'm not on my period because they're really comfortable."


Kristie N.

You may also like

Some other products you might love

×
Welcome Newcomer