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4.6 from 311 reviews

Seamless Period G-String

Seamless Period G-String

Regular price $25.99
Regular price $25.99 Sale price
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βœ”Made for light days and spotting
βœ”Feels just like your everyday G-string
βœ”Slim, discreet protection

 
Red
Red
Black
Black
Pink
Pink
Apricot
Apricot
 
 
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Free Shipping

Over $71.99

30-Day Risk Free Trial

Free From PFAs

& Chemicals

Sizing Guide
Size & Fit:

Ayla and Olivia are both wearing a size M. Symon is wearing a 3XL.

Customer Feedback:

This style runs true to size.

How To Measure:

We want you to be as comfortable as possible on your period. Just follow the measurements above.

We recommend measuring yourself instead of relying on your usual size. Every style and pair varies, so please check this if you are ordering multiple styles.

If you sit in-between sizes, we recommend sizing up.

Waist: Measure the narrowest part of your waist, below the ribcage and above your hip bone.

Hip: Measure the fullest part of your hip, keeping the tape measure straight.

Description

Introducing AuntFloβ„’ SeamlessΒ GΒ πŸ‘ – Your Newest Period Bestie.Β 

Risk-Free Trial

Under our 30 Day Risk-Free Trial, first-time customers may try one garment from their first order with no risk.

You can read more about it here.

These return rights come in addition to the usual Statutory Rights summarised in this policy. Please read this returns policy carefully, as it contains important terms relating to your purchase.

Mix & Match

Mix and match colours and sizes across the same style of period underwear.

Here is how to claim your free pairs:

🎁 For 1 FREE pair: just add 3 single pairs to your cart. The offer is applied automatically to one pair.

🎁 For 2 FREE pairs: just add 5 single pairs to your cart. The offer is applied automatically to two pairs.

Please note: this offer cannot be combined with other offers or discounts.

Worn and loved by over 50,000+ Women

More than words from us β€” take a look at how women everywhere are wearing AuntFlo.

Light Period Protection

Holds up to 1.5 tampons

Actually Seamless

Incognito under your tightest clothes

Made To Move

Perfect for the active girlies

Wear, Wash, Reuse

Better for you & the planet

Slideshow

With Our 4-Layer Technology

Created by women to feel as comfortable as your favourite pair of undies, while delivering absorbency you can truly rely on 🩸

Layer 1: Top Layer

Made to sit against the vulva, this breathable layer keeps you feeling cool and dry so your skin can breathe freely.

Layer 2: Absorbency

Made to sit against the vulva, this breathable layer keeps you feeling cool and dry so your skin can breathe freely.

Layer 3: Waterproof

This layer builds a protective barrier against leaks, giving you all-day confidence and protection you can depend on.

Layer 4: Cotton

Crafted from soft cotton, this layer holds every component together for maximum comfort and high-performance support.

Have Questions?

AuntFlo Will Answer...

What if I get the wrong size?

Oh no, the wrong size ended up in your cart...

Because our products are classified as sanitary items, we are unable to swap them over for you, so they will need to stay with you.

Sanitary products that come back to us cannot be sold again, even when they are genuinely unused, unworn and unwashed. That rule exists to keep hygiene, health and safety standards strict, protecting both our customers and our warehouse team. We are here for the planet, but we are here for your health too!

That said, if this is your very first order with us and the size you picked was a mistake, we can send you one pair of underwear in the correct size as a gift.

Just reach out to our support team and we will sort it out with you!

Do I wear them on their own?

It depends on how heavy your flow is and which absorbency level you picked. Our period undies can be worn completely on their own, or alongside extra protection if you prefer.

Give yourself a cycle or two to find the combination that suits you best. No two periods are the same!

Is AuntFlo free from PFAs?

Yes, our period undies are PFA free. PFAs have never been part of how our products are designed.

How often should I change them?

How long you can go between changes comes down to a few things: your flow, the absorbency of the pair you are wearing and how comfortable you feel. Use these guidelines as a starting point:

1. Flow Level

  • Light Flow: With a lighter flow you can often go up to 8 hours before changing, depending on the absorbency rating of the pair.
  • Moderate Flow: On moderate days, plan to change roughly every 6-8 hours, sooner if you notice any dampness or discomfort.
  • Heavy Flow: When your flow is heavy, changing every 4-6 hours keeps leaks away. Depending on how much is absorbed, you may want to change even sooner.

2. Signs of Full Absorbency

  • Feeling Damp or Wet: Noticing moisture coming through means the pair has hit its absorbency capacity and it is time for a fresh one.
  • Discomfort: If the fabric starts to feel uncomfortable or clings to your skin, change them to stay comfortable and hygienic.

3. Personal Comfort

  • If you stop feeling confident or comfortable, even before the absorbency limit is reached, go ahead and change. Feeling secure through your period matters most.

4. Activity Level

  • Busy days full of exercise, swimming or constant movement usually call for more frequent changes. Extra movement shifts how much is absorbed, so a fresh pair keeps you leak-free and comfortable.

5. End of Day / Overnight Use

  • Wearing them overnight? Changing after 8-12 hours is a good rule, depending on your flow. On very heavy nights, pairing them with a menstrual cup or tampon adds extra backup.

Above all, listen to your body and change whenever comfort starts to slip. That is what keeps you confident and fresh.

30 Day Risk-Free Trial

Under our 30 Day Risk-Free Trial, first time customers get to try one garment from their first order with no risk at all. If it does not perform the way you hoped, we will happily refund that single item (shipping costs excluded).

Full details are available here.

These return rights sit on top of the Statutory Rights you already have, which are summarised in this policy. Please read it carefully, as it holds important terms about your purchase.

Shipping information

Country - United States

  • FREE Standard Shipping (5-15 Business Days) for orders over $99USD
  • Standard Shipping - $9.99 (Orders under $99USD)

Country - Canada

  • FREE Standard Shipping (5-15 Business Days) for orders over $99USD
  • Standard Shipping - $9.99 (Orders under $99USD)

Country - UK

  • FREE Standard Shipping (5-15 Business Days) for orders over $50USD
  • Standard Shipping - $5 (Orders under $50USD)

As soon as your order leaves our warehouse, an email with your tracking number lands in your inbox.

Still nothing after 15 days? Email us straight away and we will chase it up with the courier.

Customer Reviews

Women from all over Australia, UK & New Zealand are living comfortable and confident!

Allyscia F. Verified

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I really love them, they're amazing! And so comfortable.

Samantha Elizabeth G. Verified

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I've tried other period G-strings that never gave me the confidence these ones do! They're also perfect for the gym since they're seamless, so you can keep wearing tights and nothing shows.

Kelly G. Verified

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Arrived incredibly fast. Awesome quality.

Rebekah R. Verified

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I absolutely love this brand!

Review photo by Lilly B. Verified

Lilly B. Verified

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I love them so much! They're super comfy, they don't look tacky at all and they still make me feel confident even during that time of the month. These are for lighter days and I'm definitely going to buy the heavier period undies πŸ’šπŸ’šπŸ’š thank you!!

Alex B. Verified

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These are a life saver!! As someone who always struggled with reactions to pads and an inconsistent flow for tampons, they're a game changer!! I wear them every day, even off my period, because I work a very physical job and get sweaty down there. They genuinely help with that too! I love them so much I'm already ordering other styles. Super comfortable, extremely absorbent, easy to clean. They take about 1.5-2 days to fully air dry, but even so I could not live without these!!

Claire M. Verified

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The fit is perfect and the fabric is so buttery soft, it makes my period far more comfortable and stylish!

Lilly B. Verified

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Absolutely love these! Cute, reliable, comfortable and ethical! I'm definitely telling everyone about them πŸ’šπŸ’šπŸ’š

Ana Cristina V. Verified

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I love this underwear! It really works and it's very comfortable too.

Stacey B. Verified

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I'm not usually a G-string girl, but I decided to give it a go. So soft, so comfy.

Jasmin W. Verified

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Durable.

Isabella H. Verified

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Wow. As a girl with a very heavy endometriosis flow, I'm constantly bleeding through tampons, pads, thongs, you name it. This has genuinely changed my life. I can wear a smaller tampon that doesn't hurt as much AND still stay protected from my flow AND work out in my leggings with these thongs. Iconic!!

Kelera W. Verified

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Easily the best undies I've ever owned. Thank you for making it easier to hit the gym with no bulky pads in sight.

Bianca J. Verified

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They're so comfortable and they work perfectly. Even during workouts they've been great. So happy I found this website!

Fana F. Verified

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Great product! The fabric is good and durable, and I'm loving the fit. Great for exercising.

Emily S. Verified

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Best period underwear on the market. I've tried so many and this was my first comfortable, stress free period ever, and I'm 32.

Sanjana D. Verified

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Amazing quality and they look so good! So happy with them.

Ellamay F. Verified

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Great, soft fabric, comfy.

Emily K. Verified

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So comfy, great design and shape! I just wish they came in a XXS, as the XS is a little loose around the crotch for a size 6.

Moulton M. Verified

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So comfy! Does the job.