Flow: Every flow Absorbency: Up to 50mls Tampons Equivalent: Up to 8-10 tampons* Perfect For: Full period cycle Feels: Secure and comfy
*(Based on 5ml tampon)
A curated collection of our most-loved styles.This bundle features fan favourites known for their comfort, absorbency, and flattering fit. The ultimate way to experience our top-rated period protection in one go.
Our period undies are also PFA free. PFAs are absolutely not part of our AuntFlo product design.
Care: Pre-rinse, gentle cold machine wash, hang to dry, reuse and repeat. Read our FAQs for more.
OEKO TEX
Our fabrics are OEKO-TEX® certified which have been laboratory tested with strict scientific standards to protect your health.
Made From:
Seamless G-String:
Exterior: 78% nylon, 22% spandex
Inner: 95% cotton, 5% spandex
Middle: 80% polyester, 20% nylon
Leopard Lace:
Body: 88% nylon, 12% elastane
Lining: 95% cotton, 5% elastane
Middle: 95% cotton, 5% elastane
Classic 2.0:
Body: 95% bamboo fibre, 5% spandex
Lining: 95% bamboo fibre, 5% spandex
Middle: 80% polyester, 20% nylon
Seamless Active:
Outer: 78% nylon, 22% spandex
Middle: 100% polyester
Inner: 80% polyester, 20% nylon
Boyfriend Brief 2.0:
Body: 95% cotton, 5% spandex
Lining: 95% cotton, 5% spandex
Middle: 80% polyester, 20% nylon
Risk-Free Trial
As per our 30 Day Risk-Free Trial, first time customers can try one garment from your first order risk-free.
These returns rights are in addition to your usual Statutory Rights summarised in this policy. Please read this returns policy carefully as it contains important terms relating to your purchase.
Don’t just take our word for it... see how women everywhere are wearing AuntFlo.
Full Period Protection
Most popular styles for every flow
Made For You
Designed by women, for women
Sleep Without Stress
Perfect for overnight protection
Wear, Wash, Reuse
Better for you & the planet
Slideshow
With Our 4-Layer Technology
Designed by women to be as comfy as your favourite pair of undies, but with powerful absorbency you can count on 🩸
Layer 1: Top Layer
Designed for contact with the vulva, this layer is breathable and helps keep you cool and dry, allowing your skin to breathe freely.
Layer 2: Absorbency
Designed for contact with the vulva, this layer is breathable and helps keep you cool and dry, allowing your skin to breathe freely.
Layer 3: Waterproof
This layer forms a protective shield against leaks, delivering all-day confidence and dependable protection you can trust.
Layer 4: Cotton
Made from soft cotton, this layer binds all components together to ensure maximum comfort and high-performance support.
Have Questions?
AuntFlo Will Answer...
What if I get the wrong size?
Uh oh, you've grabbed the wrong size...
Unfortunately, due to AuntFlo products being labelled as Sanitary products, we are not able to switch these over for you. You will need to keep these.
Returned sanitary products cannot be resold, despite claims of them being unused, unworn, and unwashed. This is to maintain and uphold strict hygiene, health, and safety standards to protect our customers and warehouse staff.After all, we’re not only here for the planet, but also for your health!
However, if you are a first time customer with us, we can gift you one pair of underwear (in your correct size) if you have accidentally initially purchased the wrong size.
Please email us at hi@auntflo.au to chat more about this!
Do I wear them on their own?
Depending on your flow, and the absorbency level of the underwear you have chosen, you can wear our period undies on their own, or with some added protection.
Take some time to figure out what works best for you! Every period is a unique one.
Is AuntFlo free from PFAs?
Our period undies are also PFA free. PFAs are absolutely not part of our AuntFlo product design.
How often should I change them?
Knowing when to change your period underwear depends on a few factors, such as your flow, the absorbency of the underwear, and your personal comfort. Here are some general guidelines to help you determine when it’s time to change:
1. Flow Level
Light Flow: If you have a lighter flow, you may be able to wear your period underwear for up to 8 hours without needing to change, depending on the product's absorbency rating.
Moderate Flow: For moderate flow, you should change your period underwear approximately every 6-8 hours, especially if you feel any dampness or discomfort.
Heavy Flow: On heavy flow days, it's best to change your period underwear every 4-6 hours to prevent leaks. You may need to change more frequently depending on the volume of blood absorbed.
2. Signs of Full Absorbency
Feeling Damp or Wet: If you begin to feel moisture or dampness through your period underwear, it’s a sign that it has reached its absorbency capacity, and you should change them.
Discomfort: If the underwear starts feeling uncomfortable or you're aware of the fabric sticking to your skin, it's a good idea to change them to maintain comfort and hygiene.
3. Personal Comfort
If you start feeling less confident or comfortable, even if the underwear hasn't reached its absorbency limit, it's a good idea to change them. Comfort is key to feeling confident and secure during your period.
4. Activity Level
If you're very active, especially if you're exercising, swimming, or moving around a lot, you might need to change your period underwear more frequently. The increased movement can cause absorption levels to change, and you may feel more comfortable changing to ensure there are no leaks.
5. End of Day / Overnight Use
If you’re using your period underwear overnight, you may want to change them after 8-12 hours, depending on your flow. Consider pairing them with a menstrual cup or tampon for additional protection if you experience a very heavy flow.
Overall, always listen to your body and make changes when you start feeling uncomfortable, to maintain confidence and hygiene.
30 Day Risk-Free Trial
As per our 30 Day Risk-Free Trial, first time customers can try one garment from your first order risk-free. If you're not satisfied with how it functions, we'll gladly refund the cost of that single item (excluding shipping costs).
These returns rights are in addition to your usual Statutory Rights summarised in this policy. Please read this returns policy carefully as it contains important terms relating to your purchase.
Shipping information
Country - Australia
FREE Standard Shipping (5-15 Business Days) for orders over $99AUD
Standard Shipping - $9.99 (Orders under $99AUD)
Country - New Zealand
FREE Standard Shipping (5-15 Business Days) for orders over $99NZ
Standard Shipping - $9.99 (Orders under $99NZ)
Country - UK
FREE Standard Shipping (5-15 Business Days) for orders over £50
Standard Shipping - £5 (Orders under £50)
Once your order has been dispatched, we'll send you an email with a tracking number.
If your order hasn't arrived after 15 days please email us immediately and we'll follow up with the courier.
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Customer Reviews
Women from all over Australia, UK & New Zealand are living comfortable and confident!
Customer Reviews
Overall rating: 4.2 / 5 from 195 reviews.
I have never tried period underwear before and they are truly amazing!! I noticed that I only had cramps for a few minutes the first day when I would normally be in pain the full time!
Nuala D.5/5Verified
I bought the best sellers bundle to see which pair was the most comfortable. I was surprised to find the limited edition pink undies was my absolute favourite - I’ve just ordered 5 more pairs. The body and lining are made from a natural fibre, which was the main thing I was looking for. I love how the gusset goes from the front to the back (it’s very reassuring) and they just look so flattering on! Which is so nice when you’re not feeling your best. I actually look forward to my period because I get to wear them 😄❤️
Dana B.5/5Verified
Amazing! Could not recommend to anyone more
Abbey J.5/5Verified
So happy with it as always, second time buying it and will definitely buy more for my sisters
Lilly B.5/5Verified
Love the undies. I didn’t realise the leopard print ones were so low but they are still comfy. The g string version is wow.
Theresa O.5/5Verified
Love love love these undies the leopard print ones do fit a little small but everything else is great the grey boxers are my favourite pair (currently in the wash so i couldnt show a photo) definitely recommend!
Xanthie P.5/5Verified
Great fit and feel super comfortable.
Abbey K.5/5Verified
I ordered the period underwear bundle.
I was a tad nervous a first to try these (especially knowing I would be at a festival for 5 days on my first period having them) but I can can 100% say these where the best purchase ever! They are so comfortable and feel super confident in them! Thank you so much!!
Lauren D.5/5Verified
Great pants!
Louise P.5/5Verified
Love the style
Gabriel B.5/5Verified
Very nice
Rosie F.5/5Verified
The really embarrassing stuff the rest of our body does during our monthly time, these boy short have you covered…. Glad my perimenopausal self chose the full coverage tonight, and thank you auntflo for a trustworthy product
Becky W.5/5
Great fit!
Jessica G.5/5Verified
I was always the person with painful tampons and pads were very uncomfortable, leaking through every time. I was skeptical about these pants thinking they wouldn’t be as good as the reviews but anything for an easy life. I tried them out on a day I was staying at home incase I hated them and leaked through, I was extremely impressed with how I could wear them all day and didn’t leak through them. I wore my next pair to work the day after and took a spare pair of pants and tampons incase this pair wasn’t as good. i managed to wear them 18 hours with no leaks and not being irritated. I had 3 more period days which I wore these pants and every time I was more impressed. You can’t see them under leggings/ skirts they blend in lovely. I even told all my girls at work they need to get them to try. I took them off in the shower and rinsed them, i’m yet to wash them in the washing machine and rewear them so will see how I get on with that. So far I am very Impressed and feel completely different about my monthly cycle. Even if you don’t think you’re going to get along with them, just try them out. it’s the best thing i have ever invested in and well worth the money.
Hattie A.5/5Verified
I LOVEEE how comfy there are and i cant wait to actually try them out
Ebony B.5/5Verified
The best period underwear ever.
Amazing design and comfortable and even sexy! I’ve never felt so excited to be on my period. They are worth every cent <3
Natalia I.5/5Verified
Gives me peace of mind!
Isabel M.5/5Verified
Love them! Genuinely life-changing. I feel so much cleaner and more comfortable. Highly recommend the Best Sellers Bundle as it really helped me work out what I like most. Will use them all and repurchase my faves so I have plenty and don't need to wash and dry them mid-cycle.
Kate H.5/5Verified
Love these. I've used them for one cycle so far and found them excellent.
I've been using period underwear from a different brand for years and much prefer the Aunt Flo ones. The fit, fabrics and design make them super comfortable. I'll be purchasing more for my daughters.
Ashlee S.5/5Verified
Really absorbent and flattering
Isobel R.5/5Verified
I never ever write reviews. But when I tell you these have genuinely changed my periods, I mean it!
I have super heavy periods, I’m talking 1 super tampon and a night pad, a pair of shorts, leggings and then jeans, I would leak through these within 1-2 hours. Sometimes I would have to drive home half way through a shift just to shower and change myself. I would feel so insecure at work and going out, worried about leaking all the time that I would stay at home. My periods stopped me from doing things.
I got their heavy flu bundle.
Omg, I will never look back, I feel confident again! I have had zero leaks, they’re so comfortable, I am dry down there (which on my period has never been a thing), it doesn’t smell (period pads smell the worst!). These have allowed me to go to work and not worry about my period which I have not had in a really long time.
Plus there’s no nasties in the materials unlike tampons and pads!
Overall the best purchase I have ever made, ye they are expensive but omg are they worth it.
Clare B.5/5
So comfy!
Lucy J.5/5Verified
Absolutely LOVE !! super comfy and does the job. Can definitely recommend :)
Ally M.5/5Verified
Very comfy, no leaks, would buy again
Alexandra T.5/5Verified
Love them! So comfortable and I feel protected
Destini H.5/5Verified
Amazing! And a super helpful team thank you x
Hinemoa K.5/5Verified
Hi I’m storm, I bought these recently and all I can say is that they are absolutely amazing, I was allergic to all pads and I was constantly putting up with the hives and the creams because of it, I had tried other periods undies before but they weren’t good they where bulky only came in the one design, didn’t hold a lot And kinda expensive, since I bought these I have loved them there comfy, I love the fact that they go all the way to the back and front witch really helps when sleeping, they hold a lot, it’s a little more effort to clean and that but honestly It’s worth it , and the cost to I mean pads where I live are 5 to 6 dollars a packet and each month it adds up, so the cost of it is definitely an investment. I truly think these are the best purchase I’ve made, the only thing I would like to see is for the briefs to have some side spill coverage, but honestly these are definitely worth it.
Thank you so so much I love them 🙏❤️🩸
Storm R.5/5Verified
Great product
Nicole P.5/5Verified
Best ones I have ever tried. Really love the boxer shorts one as I feel I can wear my oversized shirts with only these undies without fear of leaking everywhere
Paige F.5/5Verified
Everything exceeded my expectations! My first time wearing them were super comfortable and how soft they were really surprised me. I will definitely be buying more in the future!
Thank you!
Gabrielle F.5/5Verified
Comfy and true to size very soft fabric
Cinzana A.5/5Verified
Comfortable, cute, absorbent. Simply wonderful.
Amelia F.5/5Verified
I like my underwear, thy are very comfortable and cute, especially the animal print ones
Olivia K.5/5Verified
Absolutely obsessed with every pair in this bundle!!! The full gusset front to back is genius. They’re the cutest period underwear I have owned. Certainly size up if you’re buying the bundle (the last thing you want is tight, ill fitting underwear on your mens) I’m usually a size S-M & purchased a size L for this group, which proved to be the right choice. Customer service was also premium & on top of it immediately with any queries!! I accidentally faulted some details with shipping & Ash was on top of it immediately- even though it was completely my bad. All round a fantastic company to support! Will be re-purchasing as needed :) thank you!!
Anita A.5/5Verified
So comfortable and no leakage with my heavy flow! Feels so good to know I’m using toxin free products, I love the range of styles as well so I can wear different underwear depending on what day of my period I’m on- the leopard print lacy ones are perfect for my lighter flow days so I can wear them under any clothes and they’re not bulky at all! ❤️❤️❤️
Lauren D.5/5Verified
Love the g strings! If you’re in the UK double check the sizing as they run slightly bigger on the website. I’m a UK 14 and ordered first a large, then had to switch to Medium. The leopard print ones are pretty but low absorbency, I used them on day 2 with a tampon and somehow I leaked. Medium flow with a tampon in, so I found it a bit upsetting, as this wasn’t supposed to happen since I was wearing them just as an extra protection since was still wearing a tampon. Glad I didn’t use them on their own! Therefore I’d recommend to wear the leopard ones carefully maybe just at the end of the period or in case of spotting. Overall, I’d say I’m happy with the products and I was testing them, I’d defo buy again the g-strings!
Val V.5/5Verified
Amazing quality. Will be purchasing again!
Genuinely great price and value. Please do yourself a favour and buy them.
Andrea W.5/5Verified
Game changer! I’ve used probably every brand of period undies that are sold in supermarkets and chemists over the years and wondered how much better these could truly be. I saw the marketing on insta after about a year decided to pull the plug and try them… these are the BEST.
The full absorbent gusset from the back to the front in the boyfriend and classic 2.0 means you get a PROPER good night sleep without worrying about leakage. The colours are super cute (the leopard pair especially) and I found the sizing accurate!
I’m 5’7 with a size 33” waist (approx Aus 14) and got the 2XL bundle to size up for comfort and they fit perfect, they’re secure enough to feel fully protected but not tight or uncomfortable at all.
Rhiannon5/5
Loved them! So comfortable, especially the boyfriend style. love wearing them even when I’m not on my period.
Lizzie R.5/5Verified
The fit was great with sizing up one side just made them a more comfy fit and don’t worry you shouldn’t get any trouble with leaks !
Material super comfortable aswell and the undies don’t cut in either!