Active Bundle
✔ Invisible protection
✔ Stay dry, supported, and seamless
✔ Perfect for workouts
Styles in this bundle are true to size.
We want you to be as comfortable as possible on your period. Just follow the measurements above.
We recommend measuring yourself, and not going by your standard size. Each style and pair will vary, so please check this if ordering multiple styles.
If you're 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, making sure the tape measure is straight.
Bundle Contains:
2x Seamless Period G-String
3x Seamless Actives (2 FREE 🎁)
Flow: Light to medium
Absorbency: Up to 20mls
Tampons Equivalent: Up to 4 tampons*
Perfect For: Workouts, movement & sweat
Feels: Seamless & secure
*(Based on 5ml tampon)
Stay dry, supported, and seamless — no matter how you move. Invisible protection under leggings, tights, and gym wear. Perfect for workouts, runs, stretches, and sweaty days when a pad just won’t cut it.
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
This product is OEKO-TEX® STANDARD 100 certified and has been tested for harmful substances.
Certificate: 26.HCN.42389
Testing Institute: Hohenstein/HTI
Made From:
Seamless G-String:
Exterior: 78% nylon, 22% spandex
Inner: 95% cotton, 5% spandex
Middle: 80% polyester, 20% nylon
Seamless Active:
Outer: 78% nylon, 22% spandex
Middle: 100% polyester
Inner: 80% polyester, 20% nylon
As per our 30 Day Risk-Free Trial, first time customers can try one garment from your first order risk-free.
You can read more about this here.
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.
Holds up to 4 tampons
Invisible under tights, leggings & gym wear
Perfect for the active girlies
Better for you & the planet
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!
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.
Our period undies are also PFA free. PFAs are absolutely not part of our AuntFlo product design.
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:
Overall, always listen to your body and make changes when you start feeling uncomfortable, to maintain confidence and hygiene.
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).
You can read more about this here.
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.
Country - Australia
Country - New Zealand
Country - UK
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.
Women from all over Australia, UK & New Zealand are living comfortable and confident!
Overall rating: 4.4 / 5 from 50 reviews.
These are genuinely the comfiest undies i’ve ever worn! I am so impressed at how they keep everything locked in while giving me the ability to still move around and be active. AND they don’t show through or give me weird lines when I wear leggings. I will be a long term customer for sure
Love that these are quick dry. Exactly what I need them for with how active I am with my gym & sports. Highly recommend!
Fast delivery, fits nice and quality feels amazing. Can’t wait to try. Kept me updated on delivery
Wry comfortable. True to size chart
Best period undies I have worn!
I have previously worn another brand of period undies, but nothing could prepare me for the buttery soft feel of these active wear period undies. They feel just like normal undies, if not better with the added bonus of no accidental leaks!
Amazing product theyre my new fav period undies
Cute fit. Amazingly comfortable.
Highly recommend - comfortable and not bulky
Super comfy and versatile
Accidentally purchase the wrong size in my first order so ordered a second lot. When mentioned this I was asked to reach out and they offered me 2 pairs for free. I bought the g’s and seam free undies and when it’s that time of the month I feel very comfortable and confident that I am not going to have any leakage. I do high intensity workouts and also run between 5-10k and these underwear are a dream. Even when it’s not that time of the month I still wear these since after having 3 kids leakage is an issue and always safe in these.
They're super comfy and actually seamless. I tried other brands before and couldn't wear them with my leggins. But these ones I'm definitely getting more so I can go to the gym and not worry about a thing.
Love them!!
So comfortbale and cant tell when your wearing them. The seamfree is amazing.
Love having something seamless so it doesn’t feel like I’m wearing an adult diaper on my period through scrubs
Love wearing those ! It’s so flattering & isn’t bulky to wear with leggings at the gym
Amazing! I travel on the first day of my period and the worked perfectly. No leaks, really comfortable too. Love them!
They are perfect !!
Amazing would recommend feel completely safe in them
I love being able to not have to worry about changing tampons and just being in comfort all day!
All so comfortable to wear. Especially the seamless pair, easy to wear under gym clothes and comfortable enough to wear all day.
This is my second time buying a bundle! Try to size. Comfort fit, bought more to stock up! Great option. I’ve told friends about the product. Wish I knew about it sooner.
Soooo comfortable I absolutely love them
Lovely thin pad that is super absorbent and comfortable compared to other bulkier brands. The active range is so sleek there is no VPL to worry about.
Soooo comfy! Perfect for inbetween periods and light days. Will definitely buy more.
I LOVE Aunt Flo underwear, I'm a sweater & have worn other brands of underwear & either have leaked through or felt yuck wearing them but not with Aunt Flo, they are sooo comfy (yes even the g's) & I don't stress at the gym about having sweat marks while working out.
Really Comfortable
AMAZING!! Love these undies, the quality is so so great! They are ACTUALLY seam free! I very VERY highly recommend ⭐️⭐️⭐️⭐️⭐️
Love them! They are perfect and exactly what I needed
Game changer!
This was my first time using Auntflo. A friend recommended to me. They were true to size, I was surprised how comfortable. I got the multi pack of variety of fits. I use to use Knix in Canada, I found Auntflo to be a more comfortable fit.
Love this bundle! I was skeptical if the briefs would actually be seamless because many brands advertise they are but they aren’t… but these briefs are actually seamless! Very comfortable and great value
Great, comfortable - well done team! 👏
The best period undies you can buy!! Highly recommended these and will definitely be buying more
I got the XL bundle. The g string fits well but the high rise briefs are a lot bigger !!!! I would size down on the full briefs personally. Very comfy and work great
Love them however they are a bit bigger then I thought so next time I will definitely size down
All good
I really love the underwear and that they are seamless. The only thing i haven't loved is I went by the size guide and went up a size (usually a medium) and i purchased a large and feel like they are too loose in the crotch area. I'm worried when i have a really heavy flow its going to leak but i guess we will see. :)
Better than expected! The briefs are truly as thin as they claim but can’t say they are fully seamless where the gusset meets the back. In any case they are about as good as you could expect. The briefs fit perfectly but unfortunately the g strings are on the larger size and I will size down on these in future. Otherwise I like having both options! It’s a shame they are inconsistent sizing between shapes. It would also be good if there were more clear photos on the website of the product itself, non photoshopped. This is a good product so there’s no reason not to show it for what it is! I held off buying for so long given you can’t return and I’ve been disappointed with other brands in the past, but I needn’t have worried about these! I’m pleased with my purchase and will buy again.
Love the active briefs, super comfy and sit seamlessly under tight fitting clothes. The G is also really comfortable, but i found the gusset at the front does not sit flat against my body and has an almost stiff line across the front that sticks out.
